Perhaps you should try some spelling variations:
"fop petrov OR petrov OR petroov OR peteruuov OR petri OR petriv OR petr o.s.*" » "fop peterov OR peterov OR peteroov OR peteruuov OR peteri OR peteriv OR peter o.s.*" (Expand Search), "fop petruov OR petruov OR petruoov OR peteruuov OR petrui OR petruiv OR petru o.s.*" (Expand Search), "fop petroov OR petroov OR petrooov OR peteruuov OR petroi OR petroiv OR petro o.s.*" (Expand Search)

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

• Removing quotes may allow a broader search: fop (((petrov OR petrov) OR (petroov OR peteruuov)) OR ((petri OR petriv) OR petr)) o.s.*.