Perhaps you should try some spelling variations:
"astrophysical quest" » "astrophysical clues", "astrophysical jet", "astrophysical issues"
"astrophysical dusty" » "astrophysical data", "astrophysical discs", "astrophysical disks"
"astrophysical test" » "astrophysical jet", "astrophysical jets", "astrophysical tool"

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