Perhaps you should try some spelling variations:
"fop petruv OR petriuv OR petru OR peterov OR peteruiv OR petriiv OR petr o.s.*" » "fop petruv OR petriuv OR petru OR peterov OR peterdi OR petriiv OR petr o.s.*" (Expand Search), "fop peteruv OR peteriuv OR peteru OR peterov OR peteruiv OR peteriiv OR peter o.s.*" (Expand Search), "fop petriuv OR petriiuv OR petriu OR peterov OR peteruiv OR petriiiv OR petri o.s.*" (Expand Search), "fop petrouv OR petroiuv OR petrou OR peterov OR peteruiv OR petroiiv 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 ((petruv OR petriuv) OR ((petru OR (peterov OR (peteruiv OR petriiv))) OR petr)) o.s.*.