Perhaps you should try some spelling variations:
sach kem » hanh kem
hieu van » hieu va, thien van, lieu va
lang xa » lang ha, dang xay, lang van
van lam » van nam
lam duc » lam duoc, pham duc, nam duoc
va hanh » van hanh, va thanh, va danh
hanh te » hanh tu, hanh ve, hanh de
cua tre » cua te, cuu tre, cua triet
sac ky » cac ky, sai ky
te cua » tue cua, le cua, de cua

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 x) or (lang xa)) hoi. hieu van lam duc va hanh te cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach kem) OR (sac ky)) ((nang x) OR (lang xa)) hoi. hieu van lam duc va hanh te cua tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sach kem) or (sac ky)) ((nang x) or (lang xa)) hoi. hieu van lam duc va hanh te cua tre*.