Perhaps you should try some spelling variations:
"association brings" » "associative rings", "association brief", "association buenos"
"association using" » "association mining", "association mapping"
"association being" » "associations being", "association testing", "association meeting"

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