Perhaps you should try some spelling variations:
communications can » communication can, communications case, communications juan
de developpement » sme development
developpement de » developpement des, developpement durable
typologies 6.4 » typologies 4.4, typologies 6.3, typologies 2.3
6.4 variation » 3.3 variation, 6.3.5 variation, _ variation
variation i » variation im, variation _, variation 6
timss data » time data
i timss » _ timss, 5 timss, a timss
can de » can do, can code, can deal

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

• Adding a wildcard symbol may retrieve word variants: typologies 6.4 variation i timss data communications can de developpement de l'afrique.*.