Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thuc dan » thuc hanh, hoc dan, thuc vat
danh hai » dang hai, lanh hai, manh hai
thuc day » thuc vat
cua lam » cua tam, cua nam, cua am
qua lam » qua la, qua lao, qua lau
nang co » nang cao, nang doc, nang noi
hai cua » thai cua, dai cua, hoi cua
sac ky » cac ky, sai ky
co loi » co hoi
tu sac » tu sach, tu cac, tu san

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: tu sac ky nang co loi. hieu ((qua lam) OR (cua lam)) ((thuc dan) OR (thuc day)) danh hai cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang co loi. hieu ((qua lam) OR (cua lam)) ((thuc dan) or (thuc day)) danh hai cua triet~".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang co loi. hieu ((qua lam) OR (cua lam)) ((thuc dan) or (thuc day)) danh hai cua triet*.