Get posts by similar names and categories

Question

I want to write a query for my search page to show posts by two inputs. In my search form, i have to inputs, one is for category and the other is regular search term.

I want to show the posts that have the category keyword and search term. This is the code i have wrote so far :

$_place = $_GET['s'] != '' ? $_GET['s'] : '';
$_name = $_GET['n'] != '' ? $_GET['n'] : '';
$meta_query_args = array(
    'key'     => 'keywords',
    'value'   => $_name,
    'compare' => 'LIKE'
); 

$tax_query = array(
    'taxonomy'                      =>          'category', 
    'field'                         =>          'slug', 
    'terms'                         =>          $_place, 
    'operator'                      =>          'LIKE'
); 
$adSearchQuery = new WP_Query( array(
        'post_type'                     =>          'post',
        's'                             =>          $_name, 
        'meta_query'                    =>          $meta_query_args, 
        'tax_query'                     =>          $tax_query
    )   
);

$_place is the category. This code does not show any related result, in fact, most of the times it does not show anything.

So my main question is i want to show posts by similar terms ($_name) and similar categories ($_place).

By similar, i mean when i search the abc keyword, it shows the abcde or h abc d .