Perhaps you should try some spelling variations:
hanh lai » hanh lam, hanh tai, thanh lap
hieu van » hieu va, thien van, hieu ve
van hanh » van thanh, ban hanh, van anh
tu sach » thu sach, su sach, te sach
dao duc » giao duc, tao duoc
lai cua » dai cua, hai cua, lai chau
cam duc » cam xuc, cao duc, pham duc
sach tu » sach thu, cach tu, sach ty
lang xa » lang ha, dang xay, lang van
tu lang » cu lang, tu lanh, xu lang
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 tu lang xa hoi. ((hieu van) or (lieu va)) ((cam duc) or (dao duc)) van hanh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tu lang xa hoi. ((hieu van) OR (lieu va)) ((cam duc) OR (dao duc)) van hanh lai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach tu lang xa hoi. ((hieu van) or (lieu va)) ((cam duc) or (dao duc)) van hanh lai cua tre*.