Perhaps you should try some spelling variations:
petr » petro (Expand Search), per (Expand Search)
petri » petroi (Expand Search), peri (Expand Search)
petru » petrou (Expand Search), peru (Expand Search), pentru (Expand Search)
petrou » petroou (Expand Search), perou (Expand Search), petro (Expand Search), petrov (Expand Search), petrow (Expand Search)
petrioi » petroioi (Expand Search), perioi (Expand Search)
peteru » peters (Expand Search)
peteroi » peterdi (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 (petr OR ((petri OR ((petru OR petrou) OR (peteru OR peter))) OR (petrioi OR peteroi))) _. s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (petr OR ((petri OR ((petru OR petrou) OR (peteru OR peter))) OR (petrioi OR peteroi))) _. s.*".