Perhaps you should try some spelling variations:
peri » petri (Expand Search), per (Expand Search)
peru » per (Expand Search)
petruov » peteruov (Expand Search), petriuov (Expand Search), petrouov (Expand Search)
petru » peteru (Expand Search), petriu (Expand Search), petrou (Expand Search)
petriu » peteriu (Expand Search), petriiu (Expand Search), petroiu (Expand Search)
petroiu » peteroiu (Expand Search), petrioiu (Expand Search), petrooiu (Expand Search)
petr » peter (Expand Search), petri (Expand Search), petro (Expand Search)

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

• Performing a fuzzy search may retrieve terms with similar spellings: fop ((peterov OR petruov) OR (((peri OR (peru OR petru)) OR (petriu OR petroiu)) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((peterov OR petruov) OR (((peri OR (peru OR petru)) OR (petriu OR petroiu)) OR petr)) o.s.*".