Perhaps you should try some spelling variations:
communication cross » communication costs
information can » information case, information 1, information 1.2
development en » developpement en, development menu, development eco
cross human » gross human, process human, cross domain
ice mass » ice masses, ice caps
can ice » can ie, ocean ice, can icts

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

• Performing a fuzzy search may retrieve terms with similar spellings: technologies _ information can ice mass communication cross human development en afrique.~.
• Adding a wildcard symbol may retrieve word variants: technologies _ information can ice mass communication cross human development en afrique.*.