Perhaps you should try some spelling variations:
power development » water development, career development, hydropower development
technology 14.1 » technology 4.1, technology 1.1, technology 10.1
14.1 relations » 4.1 relation, 1.2 relations, 1.4 relations
relations 3.3 » relations 3.1, relations 6.3, relations 3.2
community der » community dr, community aec, community das
3.3 value » 2.3 value, 3.5 value, 2.2 value
der power » den power, peer power, dc power

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

• Adding a wildcard symbol may retrieve word variants: technology 14.1 relations 3.3 value through community der power development china over.*.