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)
"complementarity constraints problemaaasa" » "complementarity constraints problemaaaasa" (Expand Search), "complementarity constraints problemasaaasa" (Expand Search), "complementar constraints problemaaasa" (Expand Search), "complementarity constraints problemas" (Expand Search), "complementarity constraints problematica" (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 problem") OR ("complementarity constraints problemaaasa"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"complementaridade constrained problem\") OR (\"complementarity constraints problemaaasa\"))".
• Removing quotes may allow a broader search: (( complementaridade constrained problem ) OR ( complementarity constraints problemaaasa )).
• Adding a wildcard symbol may retrieve word variants: (("complementaridade constrained problem") OR ("complementarity constraints problemaaasa"))*.