Perhaps you should try some spelling variations:
"complementarity constrained problemassasatica" » "complementaridade constrained problemassasatica" (Expand Search), "complementarity contained problemassasatica" (Expand Search), "complementarity constrained problemasssasatica" (Expand Search)
"complementar constraints problema" » "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 constrained problemassasatica") OR ("complementar constraints problema"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"complementarity constrained problemassasatica\") OR (\"complementar constraints problema\"))*".
• Removing quotes may allow a broader search: (( complementarity constrained problemassasatica ) OR ( complementar constraints problema ))*.