Perhaps you should try some spelling variations:
implementation methods » implementation method, implantation methods, implementation options
decision group » decision about
decision bulk » decision black, decision could, decision au
decision acl » decision aid, decision a, decision au
formulation » formation

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

• Performing a fuzzy search may retrieve terms with similar spellings: formulation implementation methods ((((decision bulk) OR (decision acl))) or (decision group)) like~.
• If you are trying to use Boolean operators, they must be ALL CAPS: formulation implementation methods ((((decision bulk) OR (decision acl))) OR (decision group)) like.
• The words AND, OR and NOT may confuse the search; try adding quotes: "formulation implementation methods ((((decision bulk) OR (decision acl))) or (decision group)) like".
• Adding a wildcard symbol may retrieve word variants: formulation implementation methods ((((decision bulk) OR (decision acl))) or (decision group)) like*.