The truth table for boolean searches make no sense to me when they are "A OR B AND C" or "A AND B OR C" searches.
I have double-checked the data in the table below.
It has links to actual searches so you too can verify, in one minute, the table is accurate.
Then you too can confidently explore the reality of this table and conclude "no pattern".
There are four basic search terms (word or phrase), shown bare and in boolean.
There are six pages in the search domain: S, A, B, C, E, and F.
| Search | R|e|s|u|l|t|
| [1](//mediawiki.org/w/index.php?title=Special:Search&profile=default&search=1+prefix:user:cpiral&fulltext=Search) | S | A | | C | E | |
| [2](//mediawiki.org/w/index.php?title=Special:Search&profile=default&search=9+prefix:user:cpiral&fulltext=Search) | | A | B | C | | F |
| [3](//mediawiki.org/w/index.php?title=Special:Search&profile=default&search="the number"+prefix:user:cpiral&fulltext=Search) | | | | | E | F |
| [4](//mediawiki.org/w/index.php?title=Special:Search&profile=default&search=number+prefix:user:cpiral&fulltext=Search) | S | A | | | E | F |
| [1 AND 2 OR 3](//mediawiki.org/w/index.php?title=Special:Search&profile=default&search=1+AND+9+OR+"the+number"+prefix:user:cpiral&fulltext=Search)| S | A | | C | E | |
| [2 AND 1 OR 3](https://www.mediawiki.org/w/index.php?title=Special:Search&profile=default&search=9+AND+1+OR+"the+number"+prefix:user:cpiral&fulltext=Search) | | A | B | C | | F |
| [1 OR 2 AND 3](//mediawiki.org/w/index.php?title=Special:Search&profile=default&search=1+OR+9+AND+"the+number"+prefix:user:cpiral&fulltext=Search) | | | | | | F |
| [2 OR 1 AND 3](https://www.mediawiki.org/w/index.php?title=Special:Search&profile=default&search=9+OR+1+AND+"the+number"+prefix:user:cpiral&fulltext=Search) | | | | | E | |
| [2 OR 1 AND 4](//mediawiki.org/w/index.php?title=Special:Search&profile=default&search=9+OR+1+AND+number+prefix:user:cpiral&fulltext=Search) | S | A | | | E | |
| [3 OR 1 AND 2](//mediawiki.org/w/index.php?title=Special:Search&profile=default&search="the+number"+OR+1+AND+9+prefix:user:cpiral&fulltext=Search) | | A | | C | | |
| [3 OR 2 AND 1](//mediawiki.org/w/index.php?title=Special:Search&profile=default&search="the+number"+OR+9+AND+1+prefix:user:cpiral&fulltext=Search) | | A | | C | | |