Perhaps you should try some spelling variations:
petr » petri (Expand Search), petro (Expand Search), per (Expand Search)
petroi » petrioi (Expand Search), petrooi (Expand Search), peroi (Expand Search), petri (Expand Search), petro (Expand Search), petrov (Expand Search)
petrioi » petriioi (Expand Search), petroioi (Expand Search), perioi (Expand Search)
petrui » petriui (Expand Search), petroui (Expand Search), perui (Expand Search), petri (Expand Search), pentrui (Expand Search), petrii (Expand Search)
petru » petriu (Expand Search), petrou (Expand Search), peru (Expand Search), pentru (Expand Search), petri (Expand Search)
petrooi » petriooi (Expand Search), petroooi (Expand Search), perooi (Expand Search)

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petr OR peter) OR (((petroi OR petrioi) OR (petrui OR petru)) OR petrooi)) _. s.~".
• Adding a wildcard symbol may retrieve word variants: fop ((petr OR peter) OR (((petroi OR petrioi) OR (petrui OR petru)) OR petrooi)) _. s.*.