Perhaps you should try some spelling variations:
petriuov » petrov (Expand Search), peteriuov (Expand Search), petriiuov (Expand Search), petruiuov (Expand Search)
peteriov » petrov (Expand Search)
petriuuov » peteriuuov (Expand Search), petriiuuov (Expand Search), petruiuuov (Expand Search)
petruio » peteruio (Expand Search), petriuio (Expand Search), petruuio (Expand Search)
petriiiio » peteriiiio (Expand Search), petriiiiio (Expand Search), petruiiiio (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 (((petriuov OR petriuuov) OR peteriov) OR (((petruio OR petriiiio) OR peteru) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (((petriuov OR petriuuov) OR peteriov) OR (((petruio OR petriiiio) OR peteru) OR petr)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop (((petriuov OR petriuuov) OR peteriov) OR (((petruio OR petriiiio) OR peteru) OR petr)) o.s.*.