Perhaps you should try some spelling variations:
communication costs » communication systems, communication efforts, communication skills
clean development » human development, urban development, child development
technologies can » technologies a, technologies _, technology can
can information » care information, change information, fund information
information et » information act, information _, information need
development a » development _, development bank, development banks

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

• Performing a fuzzy search may retrieve terms with similar spellings: technologies can information et de _ communication costs clean development a afrique.~.
• Adding a wildcard symbol may retrieve word variants: technologies can information et de _ communication costs clean development a afrique.*.