Perhaps you should try some spelling variations:
"complementarity constrained problemaaaasaatica" » "complementar constrained problemaaaasaatica" (Expand Search), "complementarity contained problemaaaasaatica" (Expand Search), "complementarity constrained problemaaaaasaatica" (Expand Search), "complementarity constrained problemasaaaasaatica" (Expand Search)
"complementaridade constraints problem" » "complementaridade constraints problema" (Expand Search), "complementaridade 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 constrained problemaaaasaatica\") OR (\"complementaridade constraints problem\"))~".
• Removing quotes may allow a broader search: (( complementarity constrained problemaaaasaatica ) OR ( complementaridade constraints problem ))~.
• Adding a wildcard symbol may retrieve word variants: (("complementarity constrained problemaaaasaatica") OR ("complementaridade constraints problem"))*.