Perhaps you should try some spelling variations:
petrioov » petrov (Expand Search), peterioov (Expand Search), petriioov (Expand Search), petroioov (Expand Search)
petriiiuiv » peteriiiuiv (Expand Search), petriiiiuiv (Expand Search), petroiiiuiv (Expand Search)
petroiuiv » peteroiuiv (Expand Search), petrioiuiv (Expand Search), petrooiuiv (Expand Search)
petrooiuiv » peterooiuiv (Expand Search), petriooiuiv (Expand Search), petroooiuiv (Expand Search)
petru » peteru (Expand Search), petriu (Expand Search), petrou (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 ((petriiiuiv OR (petroiuiv OR petrooiuiv)) OR ((petru OR petrioov) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petriiiuiv OR (petroiuiv OR petrooiuiv)) OR ((petru OR petrioov) OR petr)) o.s.*".