Perhaps you should try some spelling variations:
hieu cao » chieu cao, hieu cac, hieu ca
chat xuc » chat huu, cam xuc, chao xu
hoc sach » hoc sinh, hoc cac, hoc anh
van hanh » van thanh, ban hanh, van anh
tang van » dang van, hoang van, trong van
lam cua » nam cua, lam chat
va hanh » va thanh, va danh, ban hanh
tu sach » thu sach, su sach, te sach
van hoc » van hoa
ky tang » ky nang, ky dang, kho tang
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) or (hoc sach)) ky tang van hoc. hieu cao chat xuc ((va hanh) or (van hanh)) lam cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (hoc sach)) ky tang van hoc. hieu cao chat xuc ((va hanh) OR (van hanh)) lam cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (hoc sach)) ky tang van hoc. hieu cao chat xuc ((va hanh) or (van hanh)) lam cua tre*.