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