the first step to troubleshooting search results is to write the SQL statement being generated to the page. add the following code just after the <body> tag to write the sql statement:
SQL: <?php echo($query_rsGetOrderSummaryForSearch); ?><br />
i can see in the Search Server behavior though that you have mixed some "AND" criteria and some "OR" criteria.
by mixing the type like this you are causing the unexpected results.