Perhaps you should try some spelling variations:
downward communication » towards communication, aware communication, hazard communication
information centers » information contents, information officers
communication 3.2 » communication 3.3, communication 3.4, communication 2
technologies ary » technologies vary, technologies art, technologies any
ary information » early information, party information, jury information
developing l2 » developing _, developing a, developing e
f developing » 3 developing, 4 developing, 2 developing
21 downward » 2.5 downward, _ downward, a downward
centers 21 » centers 2.2, centers 2.8, centers _
l2 afrique » l afrique, en afrique
3.2 f » 3.2 fn, 3.2 _, 3.2 a

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

• Adding a wildcard symbol may retrieve word variants: technologies ary information centers 21 downward communication 3.2 f developing l2 afrique.*.