Perhaps you should try some spelling variations:
sach kem » hanh kem
hanh hai » thanh hai, nhanh hai, hang hai
van hanh » van thanh, ban hanh, van anh
hai cua » thai cua, dai cua, hoi cua
luc van » luoc van, luu van, duc van
cam luc » cam xuc, cau luc
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
nang xa » lang xa, nang ma, mang xa
va cam » va cham, va cac, va cao
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: tu ((sach kem) or (sac ky)) ((nang xa) or (nang x)) hoi. hieu va cam luc van hanh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach kem) OR (sac ky)) ((nang xa) OR (nang x)) hoi. hieu va cam luc van hanh hai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sach kem) or (sac ky)) ((nang xa) or (nang x)) hoi. hieu va cam luc van hanh hai cua tre*.