Perhaps you should try some spelling variations:
peterov » petrov (Expand Search)
petrv » petrov (Expand Search), petru (Expand Search), petro (Expand Search), peterv (Expand Search), petruv (Expand Search)
peters » peter (Expand Search), petersen (Expand Search)
petriu » petru (Expand Search), petris (Expand Search), peteriu (Expand Search), petruiu (Expand Search), petroiu (Expand Search)
petriuo » petruo (Expand Search), petriso (Expand Search), peteriuo (Expand Search), petruiuo (Expand Search), petroiuo (Expand Search)
petrouo » peterouo (Expand Search), petruouo (Expand Search), petroouo (Expand Search)
petr » peter (Expand Search), petru (Expand Search), petro (Expand Search)
petri » peteri (Expand Search), petrui (Expand Search), petroi (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 ((peterov OR (petrv OR peters)) OR ((petriu OR (petrouo OR petriuo)) OR (petr OR petri))) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((peterov OR (petrv OR peters)) OR ((petriu OR (petrouo OR petriuo)) OR (petr OR petri))) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop ((peterov OR (petrv OR peters)) OR ((petriu OR (petrouo OR petriuo)) OR (petr OR petri))) o.s.*.