Perhaps you should try some spelling variations:
"fop petrov OR petruuov OR petruv OR peteriiiiiov OR petru OR peteruo OR petr o.s.*" » "fop peterov OR peteruuov OR peteruv OR peteriiiiiov OR peteru OR peteruo OR peter o.s.*" (Expand Search), "fop petriov OR petriuuov OR petriuv OR peteriiiiiov OR petriu OR peteruo OR petri o.s.*" (Expand Search), "fop petroov OR petrouuov OR petrouv OR peteriiiiiov OR petrou OR peteruo 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 (petruuov OR petruv)) OR peteriiiiiov) OR ((petru OR peteruo) OR petr)) o.s.*.