For investigations or subject access requests, the search queries that we need to run tend to include many different options that require combinations of boolean operators AND and OR.

For instance I might need to search for user first name or last name or nichname combined with the topics for the search. The search would take this form ideally:
("A" OR "B" OR "C") AND ("D" OR "F").

As currently parenthesis are not supported in search, I must run 6 distinct searches to get the desired results (A AND D, A AND F, B and D...) and this results in duplicating many results making those more difficult to analyze. This is a simplified case and the last request I received resulted in 162 individual search queries when the use of parenthesis would have allowed getting better results with a single query.