Perhaps you should try some spelling variations:
peterv » peters (Expand Search)
petrov » petro (Expand Search), petriov (Expand Search), petruov (Expand Search), petroov (Expand Search)
petruo » petru (Expand Search), petro (Expand Search), petriuo (Expand Search), petruuo (Expand Search), petrouo (Expand Search)
petero » peters (Expand Search), petro (Expand Search)
peteroi » petersi (Expand Search), petroi (Expand Search), peterdi (Expand Search)
petr » petri (Expand Search), petru (Expand Search), petro (Expand Search)

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: fop ((peterv OR peterv) OR (petrov OR (((petruo OR petero) OR peteroi) OR (petr OR peter)))) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((peterv OR peterv) OR (petrov OR (((petruo OR petero) OR peteroi) OR (petr OR peter)))) o.s.*".