Perhaps you should try some spelling variations:
petriuov » petrov (Expand Search), peteriuov (Expand Search), petriiuov (Expand Search), petruiuov (Expand Search)
peteriov » petrov (Expand Search)
petriui » peteriui (Expand Search), petriiui (Expand Search), petruiui (Expand Search)
petruoouio » peteruoouio (Expand Search), petriuoouio (Expand Search), petruuoouio (Expand Search)
petruuuo » peteruuuo (Expand Search), petriuuuo (Expand Search), petruuuuo (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 peteriov) OR (((petriui OR petruoouio) OR (petruuuo OR petruuuo)) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petriuov OR peteriov) OR (((petriui OR petruoouio) OR (petruuuo OR petruuuo)) OR petr)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop ((petriuov OR peteriov) OR (((petriui OR petruoouio) OR (petruuuo OR petruuuo)) OR petr)) o.s.*.