Perhaps you should try some spelling variations:
auf developpement » au developpement, du developpement, ou developpement
trade information » price information, private information, trade integration
technology trade » technology trends, technology transfer, technology transfers
information 4.1 » information 4.2, information 4.3, information 14.3
pension systems » pension system
developpement l » developpement il, developpement la, developpement de
wages pension » age pension
systems auf » systeme auf, systems aus, systems a
das wages » base wages, das wagnis, das war's
l afrique » en afrique
4.1 das » 3.1 das, 2.1 das, 4.1 data

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

• Adding a wildcard symbol may retrieve word variants: technology trade information 4.1 das wages pension systems auf developpement l afrique.*.