Perhaps you should try some spelling variations:
peterov » petrov (Expand Search)
petruov » petrov (Expand Search), peteruov (Expand Search), petriuov (Expand Search), petrouov (Expand Search), pentruov (Expand Search), petriov (Expand Search)
petrv » petrov (Expand Search), petri (Expand Search), petro (Expand Search), peterv (Expand Search), petriv (Expand Search)
petriiv » peteriiv (Expand Search), petriiiv (Expand Search), petroiiv (Expand Search)
petr » peter (Expand Search), petri (Expand Search), petro (Expand Search)
petru » peteru (Expand Search), petriu (Expand Search), petrou (Expand Search), pentru (Expand Search), petri (Expand Search)
peteri » peter (Expand Search), petri (Expand Search), peters (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 petruov) OR petriiv) OR petrv) OR ((petr OR petru) OR (peteri OR peterdi))) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((((peterov OR petruov) OR petriiv) OR petrv) OR ((petr OR petru) OR (peteri OR peterdi))) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop ((((peterov OR petruov) OR petriiv) OR petrv) OR ((petr OR petru) OR (peteri OR peterdi))) o.s.*.