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

Try widening your search to All Fields.

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

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