Words with hyphens don't appear in the search
Hyphenated words aren't indexed and therefore can't be found. To reproduce, download this pdf and this odt, let tracker index them and search for f.i.
Wandabuz (I've done it with
tracker search Wandabuz) – it will be found both in the pdf and the odt, but
absorbissimmo won't, only
sorbissimmo will (curiously only in the pdf, but not the odt).
Observed on Ubuntu 18.10 with tracker 2.0.3-3.