Perhaps you should try some spelling variations:
data communication » data communications
dams development » dam development, gas development, ads development
communication 4 » communication _, communication a, communication 3
does variation » de variation, der variation, die variation
development en » developpement en, development menu, development eco
apology does » apology do's, policy does, apologie des
4 dams » 4 das, _ dams, 4 dam

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "apology does variation ((2 der) OR (_ der)) data communication 4 dams development en afrique.~".
• Adding a wildcard symbol may retrieve word variants: apology does variation ((2 der) OR (_ der)) data communication 4 dams development en afrique.*.