Perhaps you should try some spelling variations:
"20-minute manager service" » "20-minute managed service", "20-minute managed services", "20-minute managing service", "20-gute manager service"
"20-site manager series" » "20-site manager queries", "20-site manager server", "20-site manager secrets", "20-state manager series", "20-file manager series", "20-late manager series"
"20-wie manager series" » "20-wie manager queries", "20-wie manager server", "20-wie manager secrets", "20-file manager series"

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: (((("20-site manager series") OR ("20-wie manager series"))) OR ("20-minute manager service")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"20-site manager series\") OR (\"20-wie manager series\"))) or (\"20-minute manager service\"))".
• Removing quotes may allow a broader search: (((( 20-site manager series ) OR ( 20-wie manager series ))) or ( 20-minute manager service )).
• Adding a wildcard symbol may retrieve word variants: (((("20-site manager series") OR ("20-wie manager series"))) or ("20-minute manager service"))*.