Perhaps you should try some spelling variations:
development changes » development charges, development change, development channels
technology support » technology sector
ets communication » nets communication, c's communication, lea's communication
support function » support functions, support functional, supply function
4.1 development » 3.1 development, 2.1 development, 2.3 development
changes africa » change africa, exchanges africa, exchange africa
function als » function a, function bias, function game
costs 4.1 » costs 4.2, costs 4.4, costs 4.3
als non » abs non, talks non, als norm
non ets » union ets, non esse

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

• Adding a wildcard symbol may retrieve word variants: technology support function als non ets communication costs 4.1 development changes africa.*.