Perhaps you should try some spelling variations:
tay lang » tai lang, tay tang, tay quang
te sach » toc sach
ty lang » ty xang, ty hang, tu lang
qua cac » cua cac
cac tac » cac toc, cac bac, cac dac
dau bat » da bat, dau bao, dau mat
bat cua » ban cua, mat cua, bai cua
cua tre » cua te, cuu tre, cua triet
tac va » tac da, tac xa, tuc va
va dau » va dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((ty lang) or (tay lang)) xa hoi. hieu qua cac tac va dau bat cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ty lang) OR (tay lang)) xa hoi. hieu qua cac tac va dau bat cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ((ty lang) or (tay lang)) xa hoi. hieu qua cac tac va dau bat cua tre*.