Perhaps you should try some spelling variations:
peterow » petrow (Expand Search)
petroa » petro (Expand Search), petrov (Expand Search), petra (Expand Search), petrioa (Expand Search), petrooa (Expand Search), peroa (Expand Search)
petr » petri (Expand Search), petro (Expand Search), per (Expand Search)
petriov » petriiov (Expand Search), petroiov (Expand Search), periov (Expand Search), petrov (Expand Search)
petru » petriu (Expand Search), petrou (Expand Search), peru (Expand Search), pentru (Expand Search), petri (Expand Search)
peteri » peterdi (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 (((peterow OR (petroa OR (petr OR peter))) o) OR (((petriov OR petru) OR peteri) _)). s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (((peterow OR (petroa OR (petr OR peter))) o) OR (((petriov OR petru) OR peteri) _)). s.".
• Adding a wildcard symbol may retrieve word variants: fop (((peterow OR (petroa OR (petr OR peter))) o) OR (((petriov OR petru) OR peteri) _)). s.*.