Branch search should match on all substrings, not just word boundaries

Problem Definition

Nowadays the branch filter is based on "word" boundaries, so the branches that have the term searched for at the start of a "word" boundary or after a hyphen are retrieved.

For example, supposing that the term being searched for is "16", branches that start with "16" or that have "16" after a hyphen are retrieved. Any branches that contain "16" in the middle of a "word" will not match.

Suggested Solution

Make it possible to find the term searched for in the middle of a "word" boundary.