Perhaps you should try some spelling variations:
peteriiv » peterdi (Expand Search)
petruiv » peteruiv (Expand Search), petriuiv (Expand Search), petruuiv (Expand Search)
petriiv » peteriiv (Expand Search), petriiiv (Expand Search), petruiiv (Expand Search)
petriiiiv » peteriiiiv (Expand Search), petriiiiiv (Expand Search), petruiiiiv (Expand Search)
petrov » peterov (Expand Search), petriov (Expand Search), petruov (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 ((petruiv OR ((petriiv OR (peteriiiv OR petriiiiv)) OR peteriiv)) OR (petrov OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petruiv OR ((petriiv OR (peteriiiv OR petriiiiv)) OR peteriiv)) OR (petrov OR petr)) o.s.*".