Perhaps you should try some spelling variations:
communication ghosts » communication costs, communications costs, communication costa
humans development » human development, humanist development, human developments
ghosts humans » gross human
technology 2 » technology _, technology 1, technology 3
a afrique » l afrique, en afrique
gap do » gaps do, gap d

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

• Performing a fuzzy search may retrieve terms with similar spellings: technology 2 information gap do _ communication ghosts humans development a afrique.~.
• Adding a wildcard symbol may retrieve word variants: technology 2 information gap do _ communication ghosts humans development a afrique.*.