wordpress - WP_Query for product search behaves strangely - not fetching products with search query parameter added -

first of all, apology if not right place put question. searched lot did not find suitable answer anywhere.

i having strange problem woocommerce product search. in store have following 2 products:

• syska x110 – 11000 mah power bank
• htc mobile phone

when use following wp_query

$args = array(    'post_type' => array('product') );  $q = new wp_query($args); if($q->have_posts()) {    while($q->have_posts()) : the_post();      echo the_title() . '<br />';    endwhile; } 

i above 2 results fine. if add search parameter, i.e.

$args = array(   'post_type' => array('product'),   's' => 'htc' ); 

there no result when expect htc mobile phone come up.

there problem well. if change $args array this:

$args = array(     'post_type' => array('product'),     's' => 'h' ); 

it brings records other post types have , omitting products. have 3 different custom post_types in application (trips, travelog , hotel-info). strange thing don't understand when have defined specific post type ('post_type' => array('product')) why wordpress searching other post types?

to exact search being performed on other post types , product post type being ignored!!

removing 's' => 'h' again starts producing products , no other post_type searched.

i screwed up! started working woocommerce 2 days ago. please help!

update

after doing more research have found strange!

with 's' => 'htc' i.e.

$args = array(     'post_type' => 'product',     's' => 'htc' ); 

the original sql output is:

select sql_calc_found_rows wp_posts.id wp_posts 1=1 , (((wp_posts.post_title '%htc%') or (wp_posts.post_excerpt '%htc%') or (wp_posts.post_content '%htc%'))) , wp_posts.post_type in ('post', 'travelog', 'hotel-info', 'trips', 'package_tour') , (wp_posts.post_status = 'publish' or wp_posts.post_status = 'closed' or wp_posts.post_author = 1 , wp_posts.post_status = 'private' or wp_posts.post_author = 1 , wp_posts.post_status = 'hidden') order wp_posts.post_title '%htc%' desc, wp_posts.post_date desc limit 0, 10 

which unlikely, because specified 'product' other post types other product being considered!

whereas,

$args = array(     'post_type' => 'product', ); 

outputs:

select sql_calc_found_rows wp_posts.id wp_posts 1=1 , wp_posts.post_type = 'product' , (wp_posts.post_status = 'publish' or wp_posts.post_status = 'closed' or wp_posts.post_statusi  = 'private' or wp_posts.post_status = 'hidden') order wp_posts.post_date desc limit 0, 10 

and tried this:

$args = array(     'post_type' => array('product', 'trip'), );  $q = new wp_query($args); echo $q->request; 

which outputs:

select sql_calc_found_rows wp_posts.id wp_posts 1=1 , wp_posts.post_type in ('product', 'trip') , (wp_posts.post_status = 'publish' or wp_posts.post_status = 'closed' or wp_posts.post_author = 1 , wp_posts.post_status = 'private' or wp_posts.post_author = 1 , wp_posts.post_status = 'hidden') order wp_posts.post_date desc limit 0, 10 

so, above little knowledge can tell me reason (i don't know is!) wordpress ignoring product post_type 's' => 'str' parameter on!! why so? please tell me why wordpress this?

how can include products in search result using wp_query ?