Perhaps you should try some spelling variations:
"fop petroiiv OR periv OR peterov OR petru OR peteru OR peteru OR petr o.s.*" » "fop petrov OR periv OR peterov OR petru OR peteru OR peteru OR petr o.s.*" (Expand Search), "fop peteroiiv OR periv OR peterov OR peteru OR peteru OR peteru OR peter o.s.*" (Expand Search), "fop petrioiiv OR periv OR peterov OR petriu OR peteru OR peteru OR petri o.s.*" (Expand Search), "fop petrooiiv OR periv OR peterov OR petrou OR peteru OR peteru 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 ((petroiiv OR periv) OR ((peterov OR ((petru OR peteru) OR peteru)) OR petr)) o.s.*.