Perhaps you should try some spelling variations:
"water automatic association" » "water automatic dissociation", "water automating associations", "water automatic classication", "paper automatic association", "water automated association", "caper automatic association"
"rate automatic association" » "rate automatic dissociation", "rate automating associations", "rate automatic classication", "case automatic association", "page automatic association", "remote automatic association"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"water automatic association\") OR (\"rate automatic association\"))".
• Removing quotes may allow a broader search: (( water automatic association ) OR ( rate automatic association )).
• Adding a wildcard symbol may retrieve word variants: (("water automatic association") OR ("rate automatic association"))*.