horan

same situation here, and a simple solution provided: (in your current search.php)

<?php
    //get language
    $pLang = 'en_US';
    if(stristr($_SERVER['REQUEST_URI'], '/zh_CN/')){
        $pLang = 'zh_CN';
    } elseif (stristr($_SERVER['REQUEST_URI'], '/zh_TW/')){
        $pLang = 'zh_TW';
    }

    //query plugin database
    global $wpdb;
    if($pLang != 'en_US'){
        $postids = $wpdb->get_col( "SELECT post_ID FROM wp_mltlngg_translate WHERE post_content LIKE '%$s%' OR post_title LIKE '%$s%' AND language = '$pLang'", 0);
        if ( count($postids) > 0 ) {
            $searchkey = array( 'post_type' => array('post', 'page'), 'post__in' => $postids, 'posts_per_page' => -1 );
        } else {
            $searchkey = 's='.$s.'&showposts=-1';
        }
    } else {
        $searchkey = 's='.$s.'&showposts=-1';
    }

    //search with arguments
    $allsearch = &new WP_Query($searchkey);
    $key = wp_specialchars($s, 1);
    $count = $allsearch->post_count;

    // start the loop
    while ( $allsearch -> have_posts() ) : $allsearch -> the_post();
        get_template_part( 'content', 'search' );
    endwhile;
?>