Perhaps you should try some spelling variations:
regional development » national development, social development, rural development
communication costly » communication costs, communication costa, communications costs
el communication » cell communication, real communication, 3 communication
costly regional » city regional, could regional, control regional
technology des » technology does, technology debts, technology nodes
des relations » les relations, its relations, et relations
relations 2.2 » relations 2.1, relations 3.2, relations 1.2
2.2 crisis » 2.1 crisis, 2.5 crisis, 22 crisis
crisis el » crisis _, crisis a, crisis 1
a aortic » _ aortic, _ artic

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

• Adding a wildcard symbol may retrieve word variants: technology des relations 2.2 crisis el communication costly regional development a aortic.*.