Perhaps you should try some spelling variations:
petriiv » peteriiv (Expand Search), petriiiv (Expand Search), petruiiv (Expand Search)
petruiiiv » peteruiiiv (Expand Search), petriuiiiv (Expand Search), petruuiiiv (Expand Search)
petruiu » peteruiu (Expand Search), petriuiu (Expand Search), petruuiu (Expand Search)
petriov » peteriov (Expand Search), petriiov (Expand Search), petruiov (Expand Search)
petruuiiiov » peteruuiiiov (Expand Search), petriuuiiiov (Expand Search), petruuuiiiov (Expand Search)
petr » peter (Expand Search), petri (Expand Search), petru (Expand Search)

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: fop ((peteruuiv OR (petriiv OR petruiiiv)) OR ((petruiu OR (petriov OR petruuiiiov)) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((peteruuiv OR (petriiv OR petruiiiv)) OR ((petruiu OR (petriov OR petruuiiiov)) OR petr)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop ((peteruuiv OR (petriiv OR petruiiiv)) OR ((petruiu OR (petriov OR petruuiiiov)) OR petr)) o.s.*.