Perhaps you should try some spelling variations:
petriiv » peteriiv (Expand Search), petriiiv (Expand Search), petruiiv (Expand Search)
petrui » peterui (Expand Search), petriui (Expand Search), petruui (Expand Search)
petriiuui » peteriiuui (Expand Search), petriiiuui (Expand Search), petruiiuui (Expand Search)
petrov » peterov (Expand Search), petriov (Expand Search), petruov (Expand Search)
petriiov » peteriiov (Expand Search), petriiiov (Expand Search), petruiiov (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 (((petrui OR petriiuui) OR ((petrov OR peterov) OR petriiov)) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (petriiv OR (((petrui OR petriiuui) OR ((petrov OR peterov) OR petriiov)) OR petr)) o.s.*".