Perhaps you should try some spelling variations:
"complementarity contained problematica" » "complementar contained problematica" (Expand Search), "complementaridade contained problematica" (Expand Search), "complementarity obtained problematica" (Expand Search), "complementarity contained problemaatica" (Expand Search), "complementarity contained problemasatica" (Expand Search)
"complementarity constraints problem" » "complementar constraints problem" (Expand Search), "complementaridade constraints problem" (Expand Search), "complementarity constraints problema" (Expand Search), "complementarity 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 contained problematica") OR ("complementarity constraints problem"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"complementarity contained problematica\") OR (\"complementarity constraints problem\"))".
• Removing quotes may allow a broader search: (( complementarity contained problematica ) OR ( complementarity constraints problem )).
• Adding a wildcard symbol may retrieve word variants: (("complementarity contained problematica") OR ("complementarity constraints problem"))*.