Perhaps you should try some spelling variations:
peterov » petrov (Expand Search), peterv (Expand Search), petersv (Expand Search)
petriu » petru (Expand Search), petris (Expand Search), peteriu (Expand Search), petruiu (Expand Search), petroiu (Expand Search)
petero » peter (Expand Search), peters (Expand Search), petro (Expand Search)
petri » peteri (Expand Search), petrui (Expand Search), petroi (Expand Search)
petr » peter (Expand Search), petru (Expand Search), petro (Expand Search)
petriiv » peteriiv (Expand Search), petruiiv (Expand Search), petroiiv (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 (((petri OR (peterov OR (petriu OR petero))) o) OR ((petr OR petriiv) _)). s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (((petri OR (peterov OR (petriu OR petero))) o) OR ((petr OR petriiv) _)). s.".
• Adding a wildcard symbol may retrieve word variants: fop (((petri OR (peterov OR (petriu OR petero))) o) OR ((petr OR petriiv) _)). s.*.