Perhaps you should try some spelling variations:
peterov » petrov (Expand Search), peterv (Expand Search), petersv (Expand Search)
petero » peter (Expand Search), peters (Expand Search), petro (Expand Search)
peteri » peterdi (Expand Search), peter (Expand Search), peters (Expand Search)
petruuiiuv » peteruuiiuv (Expand Search), petruuuiiuv (Expand Search), petrouuiiuv (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 (petruuiiuv OR (((peterov OR petero) OR ((petri OR peteri) OR perui)) OR (petr OR per))) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (petruuiiuv OR (((peterov OR petero) OR ((petri OR peteri) OR perui)) OR (petr OR per))) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop (petruuiiuv OR (((peterov OR petero) OR ((petri OR peteri) OR perui)) OR (petr OR per))) o.s.*.