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