Perhaps you should try some spelling variations:
dat thanh » dao thanh, dat khanh, dang thanh
thanh dai » thanh hai, thanh tai, thanh dat
thuc dat » thuc vat, thuc dan, thuc day
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
vu cham » va cham, vu kham, tu cham
cua tre » cua te, cuu tre, cua triet

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 ky nang xa hoi. hieu ((vu cham) or (cao chat)) thuc dat thanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. hieu ((vu cham) OR (cao chat)) thuc dat thanh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. hieu ((vu cham) or (cao chat)) thuc dat thanh dai cua tre*.