Perhaps you should try some spelling variations:
product learning » project learning, production learning, productive learning
project defining » project definition, project planning, project design
adt learning » art learning, adult learning, fast learning

Try widening your search to All Fields.

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

• If you are trying to use Boolean operators, they must be ALL CAPS: %((adt learning) OR (((product learning) OR (project defining))))%22.
• Adding a wildcard symbol may retrieve word variants: %((adt learning) or (((product learning) or (project defining))))%22*.