Perhaps you should try some spelling variations:
petriuov » petrov (Expand Search), peteriuov (Expand Search), petriiuov (Expand Search), petroiuov (Expand Search)
peri » petri (Expand Search), per (Expand Search)
periu » petriu (Expand Search), peru (Expand Search)
petrooi » peterooi (Expand Search), petriooi (Expand Search), petroooi (Expand Search)
petrio » peterio (Expand Search), petriio (Expand Search), petroio (Expand Search)
petru » peteru (Expand Search), petriu (Expand Search), petrou (Expand Search)
petriiu » peteriiu (Expand Search), petriiiu (Expand Search), petroiiu (Expand Search)
petr » peter (Expand Search), petri (Expand Search), petro (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 (petriuov OR ((((petrooi OR peri) OR petrio) OR (petru OR (periu OR petriiu))) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (petriuov OR ((((petrooi OR peri) OR petrio) OR (petru OR (periu OR petriiu))) OR petr)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop (petriuov OR ((((petrooi OR peri) OR petrio) OR (petru OR (periu OR petriiu))) OR petr)) o.s.*.