Perhaps you should try some spelling variations:
"20 minute manager series" » "20 site manager series", "20 gute manager series", "20 minute manager queries", "20 minute manager server", "20 minute manager service", "20 minutes manager series", "20 minuten manager series", "10 minute manager series"
"20 side manager series" » "20 side manager queries", "20 side manager server", "20 side manager service", "20 site manager series", "20 side manager's series", "20 file manager series", "10 side 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 minute manager series") OR ("20 side manager series")).
• Removing quotes may allow a broader search: (( 20 minute manager series ) or ( 20 side manager series )).
• Adding a wildcard symbol may retrieve word variants: (("20 minute manager series") or ("20 side manager series"))*.