Perhaps you should try some spelling variations:
"Chinese language -- Study and teaching -- English speakers -- Audio-visual aid" » "Chinese language -- Study and teaching -- English speakers -- Audio-visual art", "Chinese language -- Study and teaching -- English speakers -- Audio-visual guide"
"Chinese language -- Study and teaching -- English speakers -- Audio-visual aids" » "Chinese language -- Study and teaching -- English speakers -- Audio-visual arts", "Chinese language -- Study and teaching -- English speakers -- Audio-visual guides"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("Chinese language -- Study and teaching -- English speakers -- Audio-visual aid") OR ("Chinese language -- Study and teaching -- English speakers -- Audio-visual aids"))) or ("chinese language -- study and teaching -- english speakers -- audio-visual basic"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("Chinese language -- Study and teaching -- English speakers -- Audio-visual aid") OR ("Chinese language -- Study and teaching -- English speakers -- Audio-visual aids"))) OR ("chinese language -- study and teaching -- english speakers -- audio-visual basic")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"Chinese language -- Study and teaching -- English speakers -- Audio-visual aid\") OR (\"Chinese language -- Study and teaching -- English speakers -- Audio-visual aids\"))) or (\"chinese language -- study and teaching -- english speakers -- audio-visual basic\"))".
• Removing quotes may allow a broader search: (((( Chinese language -- Study and teaching -- English speakers -- Audio-visual aid ) OR ( Chinese language -- Study and teaching -- English speakers -- Audio-visual aids ))) or ( chinese language -- study and teaching -- english speakers -- audio-visual basic )).
• Adding a wildcard symbol may retrieve word variants: (((("Chinese language -- Study and teaching -- English speakers -- Audio-visual aid") OR ("Chinese language -- Study and teaching -- English speakers -- Audio-visual aids"))) or ("chinese language -- study and teaching -- english speakers -- audio-visual basic"))*.