Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nang noi » nang doc
thuc dan » thuc hanh, hoc dan, thuc vat
thuc day » thuc vat
danh hai » dang hai, lanh hai, manh hai
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
noi loi » boi loi, noi doi, noi lo
qua lam » cua lam, qua la, qua lao
hai cua » thai cua, dai cua, hoi cua

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 sach ky nang noi loi. hieu qua lam ((thuc dan) OR (thuc day)) danh hai cua triet~.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang noi loi. hieu qua lam ((thuc dan) or (thuc day)) danh hai cua triet*.