Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
gender development » teacher development, sector development, career development
development inter » development intel, development center, development index
relation 3.3.2 » relations 3.3.2, relation 5.3.2, relations 2.3.2
technology 5 » technology _, technology 1, technology 3
3.3.2 cross » 3.2.2 cross, 3.3 cross
cost gender » count gender, croft gender, cost center
inter actor » inter action
5 relation » _ relation, 5 regulation, la relation

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

• Adding a wildcard symbol may retrieve word variants: technology 5 relation 3.3.2 cross _ communication cost gender development inter actor.*.