Perhaps you should try some spelling variations:
peteruov » petrov (Expand Search)
petriov » peteriov (Expand Search), petriiov (Expand Search), petruiov (Expand Search)
petriuiov » peteriuiov (Expand Search), petriiuiov (Expand Search), petruiuiov (Expand Search)
petruuuov » peteruuuov (Expand Search), petriuuuov (Expand Search), petruuuuov (Expand Search)
petriuio » peteriuio (Expand Search), petriiuio (Expand Search), petruiuio (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 ((((petriov OR petriov) OR petriuiov) OR (peteruov OR petruuuov)) OR (petriuio OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((((petriov OR petriov) OR petriuiov) OR (peteruov OR petruuuov)) OR (petriuio OR petr)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop ((((petriov OR petriov) OR petriuiov) OR (peteruov OR petruuuov)) OR (petriuio OR petr)) o.s.*.