Perhaps you should try some spelling variations:
information propagation » information presentation, information organization
propagation model » propagation case
precision data » precision dairy, precision cut, precision mass
decision data » decisions data, decision gate, decision aid
precision a » precision _

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 model ((((precision data) OR (precision a))) or (decision data)) lines~.
• If you are trying to use Boolean operators, they must be ALL CAPS: information propagation model ((((precision data) OR (precision a))) OR (decision data)) lines.
• The words AND, OR and NOT may confuse the search; try adding quotes: "information propagation model ((((precision data) OR (precision a))) or (decision data)) lines".
• Adding a wildcard symbol may retrieve word variants: information propagation model ((((precision data) OR (precision a))) or (decision data)) lines*.