Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
thanh vi » hanh vi, thanh va, thanh ve
va thanh » gia thanh, ban thanh, va tinh
tu cach » tu cac
cac dac » cac dan, cac dai, cac bac
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (thuoc sach)) ky lang xa hoi. hieu ve ((cac du) or (cac dac)) va thanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (thuoc sach)) ky lang xa hoi. hieu ve ((cac du) OR (cac dac)) va thanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (thuoc sach)) ky lang xa hoi. hieu ve ((cac du) or (cac dac)) va thanh vi cua tre*.