Perhaps you should try some spelling variations:
communication barriers » communication series, communication disorders
technological model » technological models, technological tools, technological content
model formulacion » model formulation, model simulation, mdp formulation
du developpement » de developpement, le developpement, et developpement
e communication » de communication, 1 communication, une communication
developpement l » developpement il, developpement la, developpement de
formulacion de » formulation des, formacion de, formulation _
barriers du » barriers d, barriers _, barriers a
l afrique » en afrique
de does » der does, do does, one does
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 formulacion de does e communication barriers du developpement l afrique.*.