Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
technologies math » technologies may, technologies a, technologies art
urban development » human development
math information » catch information, much information, health information
development en » developpement en, development menu, development eco
costs urban » cost urban, across urban, crisis urban
de data » e data, wide data, de datos
3.2 de » 3.2 die, 3.2 der, 3.2 dem

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

• Adding a wildcard symbol may retrieve word variants: technologies math information 3.2 de data communications costs urban development en afrique.*.