Perhaps you should try some spelling variations:
oral communication » personal communication
mena development » mental development, a development, doha development
communication 3 » communication _, communication a
technology dlt » technology data, technology debts, technology 21st
dlt integrity » data integrity, audit integrity, boot integrity
a afrique » l afrique, en afrique
study a » study 2, study 3
3 mena » _ mena, 3 meta, 3 men

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "technology dlt integrity ((study a) OR (study 1)) oral communication 3 mena development a afrique.~".
• Adding a wildcard symbol may retrieve word variants: technology dlt integrity ((study a) OR (study 1)) oral communication 3 mena development a afrique.*.