Perhaps you should try some spelling variations:
personal communication » interpersonal communication
communication cost » communication costs, communication costa, communications costs
information 6.5.2 » information 1.5.2, information 3.5.2, information 6.3.2
12.4 developing » 1.4 developing, 2.2 developing, 1.3 developing
developing asia » development asia, developing a
technologies 2 » technologies _, technologies 4
asia access » basic access, basin access, asia across
1 personal » a personal, 4 personal, 1945 personal
cost 12.4 » coast 12.4, costs 12.4, cost 2.4
6.5.2 1 » 6.5.2 _, 6.5.2 a

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information 6.5.2 1 personal communication cost 12.4 developing asia access.*.