Perhaps you should try some spelling variations:
"fop petruv OR petruuv OR perio OR peterio OR perio OR petr OR petru OR petri o.s.*" » "fop petrov OR petruuv OR perio OR peterio OR perio OR petr OR petru OR petri o.s.*" (Expand Search), "fop peteruv OR peteruuv OR perio OR peterio OR perio OR peter OR peteru OR peteri o.s.*" (Expand Search), "fop petrouv OR petrouuv OR perio OR peterio OR perio OR petro OR petrou OR petroi o.s.*" (Expand Search), "fop peruv OR peruuv OR perio OR peterio OR perio OR per OR peru OR peri o.s.*" (Expand Search), "fop pentruv OR pentruuv OR perio OR peterio OR perio OR petr OR pentru OR petri o.s.*" (Expand Search)

You may be able to get more results by adjusting your search query.

• Removing quotes may allow a broader search: fop ((petruv OR petruuv) OR (((perio OR peterio) OR perio) OR (petr OR (petru OR petri)))) o.s.*.