Perhaps you should try some spelling variations:
petrv » petrov (Expand Search), petri (Expand Search), petro (Expand Search), petriv (Expand Search)
petriiiv » petriiiiv (Expand Search), petroiiiv (Expand Search)
petriiv » petriiiv (Expand Search), petroiiv (Expand Search)
petr » petri (Expand Search), petro (Expand Search)
petru » petriu (Expand Search), petrou (Expand Search), pentru (Expand Search), petri (Expand Search)
petriu » petriiu (Expand Search), petroiu (Expand Search), petri (Expand Search), petris (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 ((petriiiv OR ((petrv OR petriiv) OR petr)) OR ((petru OR petriu) OR (per OR peter))) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petriiiv OR ((petrv OR petriiv) OR petr)) OR ((petru OR petriu) OR (per OR peter))) o.s.*".