Perhaps you should try some spelling variations:
"advanced mathematical science" » "based mathematical science", "advanced mathematical sciences", "advanced mathematics science", "advanced mathematical geosciences"
"appendix mathematical science" » "appendix mathematical sciences", "appendix mathematics science", "appendix mathematical geosciences"

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: (("appendix mathematical science") OR ("advanced mathematical science")).
• Removing quotes may allow a broader search: (( appendix mathematical science ) or ( advanced mathematical science )).
• Adding a wildcard symbol may retrieve word variants: (("appendix mathematical science") or ("advanced mathematical science"))*.