Perhaps you should try some spelling variations:
"complementarity contained problemass" » "complementaridade contained problemass" (Expand Search), "complementarity obtained problemass" (Expand Search), "complementarity contained problemas" (Expand Search), "complementarity contained problema" (Expand Search), "complementarity contained problems" (Expand Search), "complementarity contained problemaass" (Expand Search), "complementarity contained problemasass" (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.

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