Perhaps you should try some spelling variations:
"amateur automatic classication" » "amateur automatic classifcation", "amateur automatic classification", "amateur automatic classificaton", "water automatic classication", "amateur athletic classication", "better automatic classication"
"pattern automatic association" » "pattern automatic dissociation", "pattern automating associations", "pattern automatic annotation", "patterns automatic association", "better automatic association", "patients automatic association"

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: (("amateur automatic classication") OR ("pattern automatic association")).
• Removing quotes may allow a broader search: (( amateur automatic classication ) or ( pattern automatic association )).
• Adding a wildcard symbol may retrieve word variants: (("amateur automatic classication") or ("pattern automatic association"))*.