Member search

One-sentence description

Member search finds wrong members.

Current behaviour

When searching for some member, the search will also return some members that are not relevant to the search term.

Expected behaviour

When search for some member, only members relevant to the search are found.

Steps to reproduce

1. Go to member search
2. Search for Joren
3. Observe that both Joren Vrancken and Luuk Scholten are found.