Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
co sach » bo sach, cuon sach, hoc sach
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
van lam » van nam
van dau » van dao, phan dau
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
tuc va » thuc va, truc va, tuc xa
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 sach) or (co sach)) ky lang xa hoi. hieu ((van lam) or (van dau)) tuc va hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (co sach)) ky lang xa hoi. hieu ((van lam) OR (van dau)) tuc va hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (co sach)) ky lang xa hoi. hieu ((van lam) or (van dau)) tuc va hanh vi cua tre*.