Perhaps you should try some spelling variations:
series infromation » series information, series innovation, services information
4.2 communication » 4.2 communications, 3.2 communication, 4.1 communication
rural development » social development
infromation rate » inflation rate, innovation rate, information ratio
costs rural » cost rural
rate date » rate data, trade date, rate water
date 4.2 » daten 4.2, data 4.2, rate 4.2

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

• Adding a wildcard symbol may retrieve word variants: technology series infromation rate date 4.2 communication costs rural development 1 africa.*.