Perhaps you should try some spelling variations:
tham thuc » nham thuc, pham thuc, tam thuc
danh vai » danh sai, danh va, doanh van
sang tai » hang tai, sang tao, sang than
tang tai » hang tai, dung tai, sang tao
sach kem » hanh kem
vai cua » dai cua, hai cua, lai cua
va danh » va dinh, va dan, va hanh
thuc va » thuc vat, thuc dan, thuc day
ve tham » va tham, ve cham, vi tham
hieu ve » hieu va, hieu van
sac ky » cac ky, sai ky
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) or (tang tai)) hai. hieu ve tham thuc va danh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach kem) OR (sac ky)) ((sang tai) OR (tang tai)) hai. hieu ve tham thuc va danh vai cua te.
• Adding a wildcard symbol may retrieve word variants: su ((sach kem) or (sac ky)) ((sang tai) or (tang tai)) hai. hieu ve tham thuc va danh vai cua te*.