Perhaps you should try some spelling variations:
cam thuc » am thuc, nam thuc, cam thu
tang tai » hang tai, dung tai, sang tao
hanh hai » thanh hai, nhanh hai, hang hai
sang tai » hang tai, sang tao, sang than
hai cua » thai cua, dai cua, hoi cua
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
ve cam » ve cham, ve cac, va cam
sac ky » cac ky, sai ky
su sac » su sach, su cac, su xac

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky ((tang tai) or (sang tai)) roi. hieu ve cam thuc va hanh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky ((tang tai) OR (sang tai)) roi. hieu ve cam thuc va hanh hai cua tre.
• Adding a wildcard symbol may retrieve word variants: su sac ky ((tang tai) or (sang tai)) roi. hieu ve cam thuc va hanh hai cua tre*.