Perhaps you should try some spelling variations:
communication channel » communication channels, communication case, communication challenges
methods dimension » methods diffusion, ethics dimension, metholodgy dimension
channel methods » channels methods, change methods, panel methods
tuple spaces » tuple space, triple space
whose spaces » phase spaces, shape spaces, whose race
type spaces » state spaces

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

• Performing a fuzzy search may retrieve terms with similar spellings: communication channel methods dimension ((((tuple spaces) or (whose spaces))) or (type spaces))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: communication channel methods dimension ((((tuple spaces) OR (whose spaces))) OR (type spaces)).
• Adding a wildcard symbol may retrieve word variants: communication channel methods dimension ((((tuple spaces) or (whose spaces))) or (type spaces))*.