Enhance food database search function

[drunken-dwarf]

Currently the search function in the food database only searches for the (exact) titel. If I want to search for a brand, it has to be included in the titel to be found. I can also not do a fuzzy search, since it tries to match the precise string.

Example:
I want to find "Milchreis" from "Müller", so I search for "Müller Milchreis" ("Milchreis Müller" does not work).
I get a few results, which have that exact string in the title.
If I only search for "Milchreis" I get dozens of results, some from Müller (more than with the query above), some from other brands.