Perhaps you should try some spelling variations:
communication ports » communication part, communication efforts, communication pt
pt communication » put communication, et communication, post communication
relation 3.3.2 » relations 3.3.2, relation 5.3.2, relations 2.3.2
technology 1 » technology _
3.3.2 crisis » 6.3.2 crisis, 13.2.2 crisis, 3.3.2 cross
ports sector » port sector, port sectors, export sector
index action » index option, index options, index author
1 relation » 1 relations, _ relation, 5 relation
crisis pt » crisis _, crisis a

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

• Adding a wildcard symbol may retrieve word variants: technology 1 relation 3.3.2 crisis pt communication ports sector development index action.*.