Perhaps you should try some spelling variations:
sach kem » hanh kem
hanh vai » hanh vi, hanh va, hanh tai
van hanh » van thanh, ban hanh, van anh
sang tao » hang tai
vai cua » dai cua, hai cua, lai cua
tuc van » thuc van, truc van, tuc va
cam tuc » cam xuc, cam tu, nam thuc
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu van
tao hoi » tao khoi, tao boi, tay hoi
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: su ((sach kem) or (sac ky)) sang tao hoi. ((hieu ve) or (hieu va)) cam tuc van hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach kem) OR (sac ky)) sang tao hoi. ((hieu ve) OR (hieu va)) cam tuc van hanh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: su ((sach kem) or (sac ky)) sang tao hoi. ((hieu ve) or (hieu va)) cam tuc van hanh vai cua tre*.