Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
dang xay » dang van, van xay
tu sach » thu sach, su sach, te sach
cham tu » pham tu, cam tu, chai tu
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
lang ha » long ha
cua tre » cua te, cuu tre, cua triet
sang ma » tang ma, nang ma, sang tao
tu gia » tu giao, tu giac, tu giay

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y ((sang ma) or (((dang xay) or (lang ha)))) hoi. hieu ve cham tu gia thanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y ((sang ma) OR (((dang xay) OR (lang ha)))) hoi. hieu ve cham tu gia thanh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach y ((sang ma) or (((dang xay) or (lang ha)))) hoi. hieu ve cham tu gia thanh dai cua tre*.