Perhaps you should try some spelling variations:
cham thuc » nham thuc, pham thuc, tham thuc
qua cham » qua hai, qua cac, va cham
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
luu tre » luu tru, cuu tre, luy tre
su xac » pu xac
su cac » tu cac, su cao, su can
ma hoi » mai hoi, ma hoa, me hoi
vi luu » vi lua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((su xac) OR (su cac)) ky nang ((ma hoi) OR (xa hoi)). hieu qua cham thuc va hanh vi luu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su xac) or (su cac)) ky nang ((ma hoi) OR (xa hoi)). hieu qua cham thuc va hanh vi luu tre~".
• Adding a wildcard symbol may retrieve word variants: ((su xac) or (su cac)) ky nang ((ma hoi) OR (xa hoi)). hieu qua cham thuc va hanh vi luu tre*.