Perhaps you should try some spelling variations:
pro{acute}eticas » prof{acute}eticas, pro{acute}eticos
prod{acute}activa » profd{acute}activa, proud{acute}activa, prof{acute}activa, prol{acute}activa, prod{acute}active
prod{acute}actina » profd{acute}actina, proud{acute}actina, prof{acute}actina, prol{acute}actina, prod{acute}acting
pero{acute}icticas » pedro{acute}icticas, peru{acute}icticas, pero{acute}ictimas, pero{acute}acticas, pero{acute}cticas

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((pro{acute}eticas OR pero{acute}icticas) OR (prod{acute}activa OR prod{acute}actina)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((pro{acute}eticas OR pero{acute}icticas) OR (prod{acute}activa OR prod{acute}actina)) ;".
• Adding a wildcard symbol may retrieve word variants: ((pro{acute}eticas OR pero{acute}icticas) OR (prod{acute}activa OR prod{acute}actina)) ;*.