Perhaps you should try some spelling variations:
peteriov » petrov (Expand Search)
petriiuov » peteriiuov (Expand Search), petriiiuov (Expand Search), petruiiuov (Expand Search)
petruuuov » peteruuuov (Expand Search), petriuuuov (Expand Search), petruuuuov (Expand Search)
petruuv » peteruuv (Expand Search), petriuuv (Expand Search), petruuuv (Expand Search)
petruo » peteruo (Expand Search), petriuo (Expand Search), petruuo (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 ((((petriiuov OR petruuuov) OR peteriov) OR (petruuv OR peteruv)) OR (petruo OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((((petriiuov OR petruuuov) OR peteriov) OR (petruuv OR peteruv)) OR (petruo OR petr)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop ((((petriiuov OR petruuuov) OR peteriov) OR (petruuv OR peteruv)) OR (petruo OR petr)) o.s.*.