wordpress默认会搜索 标题和内容 所有匹配的关键字，所以精确度大大降底，下面这个是改为只搜索标题的方法，这个精确度就高很多了哟！！

打开文件 wp-includes/query.php
按下面的方法替换

REPLACE:

$search .= “{$searchand}(($wpdb->posts.post_title LIKE ‘{$n}{$term}{$n}’) OR ($wpdb->posts.post_content LIKE ‘{$n}{$term}{$n}

WITH:

$search .= “{$searchand}(($wpdb->posts.post_title LIKE ‘{$n}{$term}{$n}’) )”;

REPLACE:

$search .= ” OR ($wpdb->posts.post_title LIKE ‘{$n}{$term}{$n}’) OR ($wpdb->posts.post_content LIKE ‘{$n}{$term}{$n}’)”;

WITH:

$search .= ” OR ($wpdb->posts.post_title LIKE ‘{$n}{$term}{$n}’) “;