Perhaps you should try some spelling variations:
communication costs » communication systems, communication efforts, communication skills
technologies could » technologies volume
could information » child information, pooled information, road information
information needs » information flows, information networks
clean development » human development, urban development, child development
development co » development _, development a, development case
needs de » needs _, needs a

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

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