Perhaps you should try some spelling variations:
petriiv » peteriiv (Expand Search), petriiiv (Expand Search), petruiiv (Expand Search)
petriuiiuv » peteriuiiuv (Expand Search), petriiuiiuv (Expand Search), petruiuiiuv (Expand Search)
petruov » peteruov (Expand Search), petriuov (Expand Search), petruuov (Expand Search)
petruiio » peteruiio (Expand Search), petriuiio (Expand Search), petruuiio (Expand Search)
petriuiio » peteriuiio (Expand Search), petriiuiio (Expand Search), petruiuiio (Expand Search)
petr » peter (Expand Search), petri (Expand Search), petru (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 ((petriiv OR petriuiiuv) OR (((petruov OR (petruiio OR petriuiio)) OR petero) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petriiv OR petriuiiuv) OR (((petruov OR (petruiio OR petriuiio)) OR petero) OR petr)) o.s.*".