Perhaps you should try some spelling variations:
"chinese and comparative new species" » "chinese and comparative notes species", "chinese and comparative _ species", "chinese and comparative 2d species"
"chinese and comparative law serial" » "chinese and comparative law special", "chinese and comparative flow serial", "chinese and comparative law social"

Try widening your search to All Fields.

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• If you are trying to use Boolean operators, they must be ALL CAPS: (("chinese and comparative law serial") OR ("chinese and comparative new species")).
• Removing quotes may allow a broader search: (( chinese and comparative law serial ) or ( chinese and comparative new species )).
• Adding a wildcard symbol may retrieve word variants: (("chinese and comparative law serial") or ("chinese and comparative new species"))*.