Perhaps you should try some spelling variations:
transfer stations » transit stations
5.4 communication » de communication, data communication
stations labour » state's labour, stalinism labour
labour prices » labour process, labor price, labour practices
developing en » developing e, developing eq, developing egg
4 developing » 3 developing
prices 5.4 » prices 2.4, prices 5.2, prices 4
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technology transfer stations labour prices 5.4 communication costs 4 developing en afrique.*.