Perhaps you should try some spelling variations:
information propagation » information presentation, information organization
methods nonlinear » methods linear
propagation a » propagation _
methods line » methods linear, methods linda, methods blind
methods like » methods life, methods links, methods laue
a execution » _ execution, 5 execution, 7 execution

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 a execution ((((methods line) or (methods like))) or (methods nonlinear))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: information propagation a execution ((((methods line) OR (methods like))) OR (methods nonlinear)).
• Adding a wildcard symbol may retrieve word variants: information propagation a execution ((((methods line) or (methods like))) or (methods nonlinear))*.