Perhaps you should try some spelling variations:
communications series » communication series, communications services, communication services
development effect » development efforts, development project, development east
formation phase » formation chapter
technologies 1 » technologies _, technologies 4, technologies 2
1 formation » 1.2 formation, de formation, en formation
der data » under data, order data, der daten

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

• Performing a fuzzy search may retrieve terms with similar spellings: technologies 1 formation phase der data communications series _ development effect afrique.~.
• Adding a wildcard symbol may retrieve word variants: technologies 1 formation phase der data communications series _ development effect afrique.*.