Perhaps you should try some spelling variations:
health communication » data communication
power development » water development, career development, hydropower development
technology 8.1 » technology 3.1, technology 2.1, technology 4.1
8.1 relations » 4.1 relation, 1.2 relations, 1.4 relations
relations 3.1 » relations 2.1, relations 1, relations _
costs power » cost power, costs per, costs peter
china one » china money, china over
3.1 male » 2.1 male, 3.1 make, 3.1 mali

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

• Adding a wildcard symbol may retrieve word variants: technology 8.1 relations 3.1 male health communication costs power development china one.*.