Perhaps you should try some spelling variations:
"complementarity contained problemaas" » "complementaridade contained problemaas" (Expand Search), "complementarity obtained problemaas" (Expand Search), "complementarity contained problemas" (Expand Search), "complementarity contained problema" (Expand Search), "complementarity contained problems" (Expand Search), "complementarity contained problemaaas" (Expand Search), "complementarity contained problemasaas" (Expand Search)
"complementar constraints problem" » "complementar constraints problema" (Expand Search), "complementar constraints problemas" (Expand Search)

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"complementarity contained problemaas\") OR (\"complementar constraints problem\"))~".
• Removing quotes may allow a broader search: (( complementarity contained problemaas ) OR ( complementar constraints problem ))~.
• Adding a wildcard symbol may retrieve word variants: (("complementarity contained problemaas") OR ("complementar constraints problem"))*.