Perhaps you should try some spelling variations:
sach kem » hanh kem
va hanh » van hanh, va thanh, ban hanh
va danh » va dinh, va dan, dia danh
cac xuc » cam xuc, cac nuoc, chat xuc
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
sac ky » cac ky, sai ky
ca cua » co cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((sach kem) or (sac ky)) nang xa hoi. hieu va cac xuc ((va danh) or (va hanh)) ca cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach kem) OR (sac ky)) nang xa hoi. hieu va cac xuc ((va danh) OR (va hanh)) ca cua tre.
• Adding a wildcard symbol may retrieve word variants: thu ((sach kem) or (sac ky)) nang xa hoi. hieu va cac xuc ((va danh) or (va hanh)) ca cua tre*.