Perhaps you should try some spelling variations:
"fop petrov OR peteri OR petriui OR petroi OR peteruiv OR peteruiv OR petr o.s.*" » "fop petrov OR peteri OR petriui OR petroi OR peterdi OR peterdi OR petr o.s.*" (Expand Search), "fop peterov OR peteri OR peteriui OR peteroi OR peteruiv OR peteruiv OR peter o.s.*" (Expand Search), "fop petriov OR peteri OR petriiui OR petrioi OR peteruiv OR peteruiv OR petri o.s.*" (Expand Search), "fop petruov OR peteri OR petruiui OR petruoi OR peteruiv OR peteruiv OR petru 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 ((((peteri OR petriui) OR petroi) OR (peteruiv OR peteruiv)) OR petr)) o.s.*.