Perhaps you should try some spelling variations:
"web sites / authority programs" » "web sites / authority program", "web sites / authority programme", "web sites / authority problems", "web site / authority programs"
"web sites / authoring program" » "web sites / authority program", "web sites / tutoring program", "web sites / authoring problem", "web site / authoring program"
"web sites / authoring programs" » "web sites / authority programs", "web sites / tutoring programs", "web sites / authoring problems", "web site / authoring programs"
"web sites / tutoring programs" » "web sites / tutoring program", "web sites / tutorial programs", "web sites / mentoring programs", "web site / tutoring programs"

Try widening your search to All Fields.

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("web sites / authority programs") OR ((("web sites / authoring program") OR ("web sites / authoring programs"))))) OR ("web sites / tutoring programs")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"web sites / authority programs\") or (((\"web sites / authoring program\") OR (\"web sites / authoring programs\"))))) or (\"web sites / tutoring programs\"))".
• Removing quotes may allow a broader search: (((( web sites / authority programs ) or ((( web sites / authoring program ) OR ( web sites / authoring programs ))))) or ( web sites / tutoring programs )).
• Adding a wildcard symbol may retrieve word variants: (((("web sites / authority programs") or ((("web sites / authoring program") OR ("web sites / authoring programs"))))) or ("web sites / tutoring programs"))*.