Perhaps you should try some spelling variations:
peru » petru (Expand Search), per (Expand Search)
petruov » peteruov (Expand Search), petruuov (Expand Search), petrouov (Expand Search)
petriu » peteriu (Expand Search), petruiu (Expand Search), petroiu (Expand Search)
petriiu » peteriiu (Expand Search), petruiiu (Expand Search), petroiiu (Expand Search)
petri » peteri (Expand Search), petrui (Expand Search), petroi (Expand Search)
petruui » peteruui (Expand Search), petruuui (Expand Search), petrouui (Expand Search)
petr » peter (Expand Search), petru (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 (petruov OR ((peru OR (petriu OR petriiu)) OR (((petri OR petero) OR petruui) OR petr))) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (petruov OR ((peru OR (petriu OR petriiu)) OR (((petri OR petero) OR petruui) OR petr))) o.s.*".