Perhaps you should try some spelling variations:
peters » peter (Expand Search), petersen (Expand Search)
petr » peter (Expand Search), petri (Expand Search), petro (Expand Search)
petroov » peteroov (Expand Search), petrioov (Expand Search), petrooov (Expand Search), petrov (Expand Search)
petru » peteru (Expand Search), petriu (Expand Search), petrou (Expand Search), pentru (Expand Search), petri (Expand Search)
petroi » peteroi (Expand Search), petrioi (Expand Search), petrooi (Expand Search), petri (Expand Search), petro (Expand Search), petrov (Expand Search)
peteri » peter (Expand Search), petri (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 ((((peters OR peters) OR petr) OR petroov) OR (petru OR (petroi OR (peteri OR peterdi)))) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((((peters OR peters) OR petr) OR petroov) OR (petru OR (petroi OR (peteri OR peterdi)))) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop ((((peters OR peters) OR petr) OR petroov) OR (petru OR (petroi OR (peteri OR peterdi)))) o.s.*.