Perhaps you should try some spelling variations:
communication foundations » communication foundation, communication education, communication collections
methods session » methods section
du line » dual line, du livre, du lifei
du lei » fu lei, mu lei
d line » 2d line, 3d line, d lins
d ling » de ling, dr ling, _ ling

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

• Performing a fuzzy search may retrieve terms with similar spellings: communication foundations methods session ((((du line) or (du lei))) or (((d line) or (d ling))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: communication foundations methods session ((((du line) OR (du lei))) OR (((d line) OR (d ling)))).
• Adding a wildcard symbol may retrieve word variants: communication foundations methods session ((((du line) or (du lei))) or (((d line) or (d ling))))*.