Perhaps you should try some spelling variations:
chain information » can information, change information, domain information
information rates » information states, information ratio, information rules
8.7 communication » 2.7 communication, 2.3 communication, 3.2 communication
technology chain » technology can, technology china, technology changing
4.2 developing » 2.2 developing, 3.2 developing, 4.1 developing
developing en » developing e, developing eq, developing egg
rates age » rates aged, rates wage, rates have
age 8.7 » age 8.5, age 3.7, age 8.1

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

• Adding a wildcard symbol may retrieve word variants: technology chain information rates age 8.7 communication costs 4.2 developing en afrique.*.