Perhaps you should try some spelling variations:
technologies challenges » technological challenges, technology challenges, techniques challenges
challenges oration » challenges operations, challenges section, challenges options
oral communication » personal communication
les developpement » le developpement, des developpements, leur developpement
developpement il » developpement de, developpement et, developpement du
oration 1.2 » oration 12, formation 1.2, location 1.2
il afrique » l afrique, en afrique
2 oral » _ oral, 4 oral
1.2 2 » 1.2 _, 1.2 a, 1.2 r
a les » a lens, a less, 2 les

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

• Adding a wildcard symbol may retrieve word variants: technologies challenges oration 1.2 2 oral communication a les developpement il afrique.*.