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 3.3 » typologies 2.3, typologies 3.2, typologies 6.3
3.3 variation » 3.3 validation, 6.4 variation, 6.3.5 variation
timss data » time data
de afrique » de l'afrique, en afrique, l afrique
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 3.3 variation _ timss data communications can de developpement de afrique.*.