Perhaps you should try some spelling variations:
sach kem » hanh kem
sang tai » hang tai, sang tao, tang tai
danh vi » hanh vi, dinh vi, danh di
thuc va » thuc dan, thuc day
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
tai ha » thai ha, tai hai, tai nha
sac ky » cac ky, sai ky
vi cua » vai cua, di cua
cua te » cua tu

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 tai ha. hieu ve cham ((thuc va) OR (thuc vat)) danh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach kem) OR (sac ky)) sang tai ha. hieu ve cham ((thuc va) OR (thuc vat)) danh vi cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach kem) or (sac ky)) sang tai ha. hieu ve cham ((thuc va) OR (thuc vat)) danh vi cua te*".