Perhaps you should try some spelling variations:
thuc day » thuc dan, thuc vat
hai cua » thai cua, dai cua, hoi cua
vai cua » dai cua, lai cua, bai cua
thu sac » thu sach, thu san, thu xac
thuc va » thuc vat, thuc dan
hieu va » lieu va, hieu qua
nang co » nang cao, nang doc, nang noi
sac ky » cac ky, sai ky
co hoi » co hoc, co loi
va am » va lam, va cam

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: thu sac ky nang co hoi. hieu va am ((thuc va) OR (thuc day)) hanh ((vai cua) OR (hai cua)) triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sac ky nang co hoi. hieu va am ((thuc va) or (thuc day)) hanh ((vai cua) OR (hai cua)) triet~".
• Adding a wildcard symbol may retrieve word variants: thu sac ky nang co hoi. hieu va am ((thuc va) or (thuc day)) hanh ((vai cua) OR (hai cua)) triet*.