Perhaps you should try some spelling variations:
peterov » petrov (Expand Search)
peteruoov » peteroov (Expand Search), petruoov (Expand Search), petersoov (Expand Search)
peteru » peter (Expand Search), petru (Expand Search), peters (Expand Search)
petrois » petris (Expand Search), peterois (Expand Search), petruois (Expand Search), petroois (Expand Search)
petroou » peteroou (Expand Search), petruoou (Expand Search), petrooou (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 ((peteruoov OR peterov) OR (((petroou OR peteru) OR petrois) OR (petr OR petri))) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((peteruoov OR peterov) OR (((petroou OR peteru) OR petrois) OR (petr OR petri))) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop ((peteruoov OR peterov) OR (((petroou OR peteru) OR petrois) OR (petr OR petri))) o.s.*.