Perhaps you should try some spelling variations:
social competences » social competencies (Expand Search), social competence (Expand Search), social consequences (Expand Search)
competences based » competencies based (Expand Search), competence based (Expand Search), competency based (Expand Search)
msel complex » model complex (Expand Search), gel complex (Expand Search), asxl complex (Expand Search)
complex dan » complex dance (Expand Search), complex data (Expand Search), complex dapc (Expand Search)
based now » based snow (Expand Search), based non (Expand Search), based no2 (Expand Search)
l cycles » _ cycles (Expand Search), 2 cycles (Expand Search), 4 cycles (Expand Search)
cycles a » cycles _ (Expand Search)
dan non » than non (Expand Search), dan ning (Expand Search)
a msel » _ msel (Expand Search), a mscl (Expand Search), a mussel (Expand Search)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (( j l cycles a new ) OR ((( a msel complex dan non ) OR ( 3 social competences based now ))))~.
• Adding a wildcard symbol may retrieve word variants: (( j l cycles a new ) or ((( a msel complex dan non ) or ( 3 social competences based now ))))*.