Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
post communication » postal communication, iot communication, put communication
land development » world development, child development
technology 1 » technology _
relation 4.3 » relations 4.3, relation 4.5, relation 5.3
crisis post » crisis past, crisis pt, crisis part
1 relation » 1 relations, _ relation, 5 relation
4.3 crisis » 8.3 crisis, 13.3 crisis, 4 crisis
cost land » cost loans

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

• Adding a wildcard symbol may retrieve word variants: technology 1 relation 4.3 crisis post communication cost land development africa asia.*.