Perhaps you should try some spelling variations:
"fop petriiov OR petroiov OR petero OR petru OR perov OR peri OR petr o.s.*" » "fop petrov OR petroiov OR petero OR petru OR perov OR peri OR petr o.s.*" (Expand Search), "fop petriiov OR petrov OR petero OR petru OR perov OR peri OR petr o.s.*" (Expand Search), "fop petriiov OR petroiov OR petero OR petru OR petrov OR peri OR petr o.s.*" (Expand Search), "fop petriiov OR petroiov OR petero OR petru OR perov OR petri OR petr o.s.*" (Expand Search), "fop petriiov OR petroiov OR petero OR petru OR perov OR per OR petr o.s.*" (Expand Search), "fop peteriiov OR peteroiov OR petero OR peteru OR perov OR peri OR peter o.s.*" (Expand Search), "fop petriiiov OR petrioiov OR petero OR petriu OR perov OR peri OR petri o.s.*" (Expand Search), "fop petroiiov OR petrooiov OR petero OR petrou OR perov OR peri 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 ((petriiov OR petroiov) OR ((((petero OR petru) OR perov) OR peri) OR petr)) o.s.*.