Perhaps you should try some spelling variations:
petriov » peteriov (Expand Search), petruiov (Expand Search), petroiov (Expand Search)
petrouiuov » peterouiuov (Expand Search), petruouiuov (Expand Search), petroouiuov (Expand Search)
petruuiuov » peteruuiuov (Expand Search), petruuuiuov (Expand Search), petrouuiuov (Expand Search)
petruiu » peteruiu (Expand Search), petruuiu (Expand Search), petrouiu (Expand Search)
petri » peteri (Expand Search), petrui (Expand Search), petroi (Expand Search)
petr » peter (Expand Search), petru (Expand Search), petro (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 ((petriov OR (peterouov OR (petrouiuov OR petruuiuov))) OR (petruiu OR (petri OR petr))) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petriov OR (peterouov OR (petrouiuov OR petruuiuov))) OR (petruiu OR (petri OR petr))) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop ((petriov OR (peterouov OR (petrouiuov OR petruuiuov))) OR (petruiu OR (petri OR petr))) o.s.*.