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