Perhaps you should try some spelling variations:
"scientific article" » "scientific articles", "scientific advice", "scientific practice"
"scientific medical" » "scientific medicine", "scientific optical", "scientific technical"
"scientific ethical" » "scientific technical", "scientific practical"

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: (((("scientific article") OR ("scientific medical"))) OR ("scientific ethical")).
• Removing quotes may allow a broader search: (((( scientific article ) or ( scientific medical ))) or ( scientific ethical )).
• Adding a wildcard symbol may retrieve word variants: (((("scientific article") or ("scientific medical"))) or ("scientific ethical"))*.