What fix can we do?
Based on the findings of and MH-11351, we need to decide what actions we take to improve the quality of the important search feature.
The solution should address both
Work as a user expects (see problems with hyphens)
If possible, allow the powerful advanced search queries...
... but in a way that users without ambitions don't fail because of unobvious special characters
Think about what metadata fields should be searched for at all to avoid search results with no obvious reason