Perhaps you should try some spelling variations:
communication barriers » communication series, communication disorders
technological model » technological models, technological tools, technological content
le developpement » de developpement, sme development
developpement en » developpement et, developpement des, developpement de
e communication » de communication, 1 communication, une communication
model formalin » model format, model formulation, model information
formalin del » formacion del, formalin shell, formazione del
barriers le » barriers law, barriers key, barriers _
del does » der does, well does, del de
does e » does de, does _, does a

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

• Adding a wildcard symbol may retrieve word variants: technological model formalin del does e communication barriers le developpement en afrique.*.