Perhaps you should try some spelling variations:
cam thuc » am thuc, nam thuc, cam thu
hanh doi » thanh doi, hanh noi, hang doi
cua viet » ca viet, hoa viet, cua vat
tang ky » dang ky, trong ky, tang khu
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
doi cua » dai cua, hoi cua
dan ky » van ky
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((dan ky) or (tang ky)) lang xa hoi. hieu va cam thuc va hanh doi cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((dan ky) OR (tang ky)) lang xa hoi. hieu va cam thuc va hanh doi cua viet.
• Adding a wildcard symbol may retrieve word variants: tu ((dan ky) or (tang ky)) lang xa hoi. hieu va cam thuc va hanh doi cua viet*.