Perhaps you should try some spelling variations:
petr » petri (Expand Search), petro (Expand Search), per (Expand Search)
petrov » petriov (Expand Search), petroov (Expand Search), perov (Expand Search), petro (Expand Search)
petru » petriu (Expand Search), petrou (Expand Search), peru (Expand Search), petri (Expand Search)
petrou » petriou (Expand Search), petroou (Expand Search), perou (Expand Search), petro (Expand Search), petrow (Expand Search)
petrooiu » petriooiu (Expand Search), petroooiu (Expand Search), perooiu (Expand Search)
peteru » peters (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 petrov) OR (((((petru OR petrou) OR peteru) OR petrooiu) OR peter) OR pentru)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petr OR petrov) OR (((((petru OR petrou) OR peteru) OR petrooiu) OR peter) OR pentru)) o.s.*".