Perhaps you should try some spelling variations:
petr » peter (Expand Search), petri (Expand Search), petro (Expand Search)
petrii » peterii (Expand Search), petriii (Expand Search), petroii (Expand Search), petri (Expand Search), petris (Expand Search)
petru » peteru (Expand Search), petriu (Expand Search), petrou (Expand Search), pentru (Expand Search), petri (Expand Search)
petrioi » peterioi (Expand Search), petriioi (Expand Search), petroioi (Expand Search)
peteru » peter (Expand Search), 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 ((petrii OR (petru OR peteru)) OR (petrioi OR peteroi))) _. s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (petr OR ((petrii OR (petru OR peteru)) OR (petrioi OR peteroi))) _. s.*".