Perhaps you should try some spelling variations:
technologies trade » technology trade, technologies case, technologies table
ley communications » kenya communications, cell communications, peru communications
trade information » price information, private information, trade integration
trade development » software development
development li » development lid, development lie, development lin
li afrique » l afrique, en afrique
table 4 » table _, table 1, table 4.1
4 ley » 4 les, 4 key, 4 le

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

• Adding a wildcard symbol may retrieve word variants: technologies trade information table 4 ley communications _ trade development li afrique.*.