Perhaps you should try some spelling variations:
propagation based » propagation case
propagation due » propagation case, propagation _
precision tools » decision tools, precision trials, decision tool
propagation a » propagation _
tools link » tools linq, tools plini, tools think

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 based) or (propagation due))) or (propagation a)) precision tools link~.
• If you are trying to use Boolean operators, they must be ALL CAPS: information ((((propagation based) OR (propagation due))) OR (propagation a)) precision tools link.
• Adding a wildcard symbol may retrieve word variants: information ((((propagation based) or (propagation due))) or (propagation a)) precision tools link*.