Perhaps you should try some spelling variations:
sach kem » hanh kem
hanh hai » thanh hai, nhanh hai, hang hai
nang mai » nang ma, nang tai, lang mai
hai cua » thai cua, dai cua, hoi cua
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
mai hoi » mai khoi, dai hoi, lai hoi
ve cac » va cac, vien cac
ve cam » ve cham, va cam, ve cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sach kem) or (sach y)) nang mai hoi. hieu ((ve cam) or (ve cac)) duc va hanh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach kem) OR (sach y)) nang mai hoi. hieu ((ve cam) OR (ve cac)) duc va hanh hai cua tre.
• Adding a wildcard symbol may retrieve word variants: te ((sach kem) or (sach y)) nang mai hoi. hieu ((ve cam) or (ve cac)) duc va hanh hai cua tre*.