Perhaps you should try some spelling variations:
information propagation » information presentation, information organization
pervasive methods » operative methods, invasive methods, preservative methods
propagation case » propagation a, micropropagation case, propagation _
case pervasive » based pervasive, aware pervasive, a pervasive
methods line » methods linear, methods linda, methods blind

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 case pervasive methods line~.
• Adding a wildcard symbol may retrieve word variants: information propagation case pervasive methods line*.