Perhaps you should try some spelling variations:
petriiiv » peteriiiv (Expand Search), petriiiiv (Expand Search), petroiiiv (Expand Search)
petrv » peterv (Expand Search), petriv (Expand Search), petrov (Expand Search)
petriio » peteriio (Expand Search), petriiio (Expand Search), petroiio (Expand Search)
petru » peteru (Expand Search), petriu (Expand Search), petrou (Expand Search)
petriu » peteriu (Expand Search), petriiu (Expand Search), petroiu (Expand Search)
petr » peter (Expand Search), petri (Expand Search), petro (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 (((petriio OR (petru OR petriu)) OR petriu) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petriiiv OR petrv) OR (((petriio OR (petru OR petriu)) OR petriu) OR petr)) o.s.*".