Perhaps you should try some spelling variations:
communication barriers » communication series, communication disorders
mental development » mineral development, capital development, spatial development
de communication » mobile communication, online communication
technologies la » technologies a, technologies le, technologies lead
barriers mental » barriers until
la formulation » la formulacion, _ formulation, la formation
formulation do » formulation de, formulation du, formulation des
development en » developpement en, development menu, development eco
do dogs » do does
dogs de » does de, dogs lie, domus de

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

• Adding a wildcard symbol may retrieve word variants: technologies la formulation do dogs de communication barriers mental development en afrique.*.