Perhaps you should try some spelling variations:
information propagation » information presentation, information organization
propagation data » propagation damage, propagation delay, propagation a
data relations » data relation, data relating, data operations
concepts cited » concepts cases, concepts care, concepts codes
concepts case » concepts cases, concepts a, concepts chapter

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

• Performing a fuzzy search may retrieve terms with similar spellings: information propagation data relations ((concepts cited) or (concepts case))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: information propagation data relations ((concepts cited) OR (concepts case)).
• Adding a wildcard symbol may retrieve word variants: information propagation data relations ((concepts cited) or (concepts case))*.