Perhaps you should try some spelling variations:
petre » petru (Expand Search), petro (Expand Search), petra (Expand Search), petrue (Expand Search), petroe (Expand Search)
petr » petru (Expand Search), petro (Expand Search)
petriv » petruiv (Expand Search), petroiv (Expand Search), petris (Expand Search), petrov (Expand Search)
petri » petrui (Expand Search), petroi (Expand Search)
petroi » petruoi (Expand Search), petrooi (Expand Search), petro (Expand Search), petrov (Expand Search), petrow (Expand Search)
petrooi » petruooi (Expand Search), petroooi (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 ((((petre OR petr) OR per) OR petriv) OR ((petri OR (petroi OR petrooi)) OR peter)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((((petre OR petr) OR per) OR petriv) OR ((petri OR (petroi OR petrooi)) OR peter)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop ((((petre OR petr) OR per) OR petriv) OR ((petri OR (petroi OR petrooi)) OR peter)) o.s.*.