Ancestry has indexed the place name as Trzpowlas. There are dozens of places in present day Poland with names beginning Trz - from Trzciana to Trzyniec, but none them end with "las" as far as I can tell.
As for places that are presently in Ukraine or Belarus the Jewishgen Gazeteer does not find many.
I suggest you visit https://www.jewishgen.org/Communities/LocTown.asp and search for places beginning Trz. You will get a list of 300 places. My best guess is Trzepowo. There are three places with that name, but they are all north or west of Warsaw.
Alternatively, do the same search on the Jewish Communities database at
and come up with a list of only six places.
I hope this helps