Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
danh vai » danh sai, doanh van, dang van
thuc dan » thuc hanh, hoc dan, thuc vat
danh va » doanh va, hanh va, anh va
sach ky » sac ky, sach y, sach kem
nang co » nang cao, nang doc, nang noi
sach ty » sach y, sach tu, sach thu
hieu va » lieu va, hieu qua
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.

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ky) OR (sach ty)) nang co hoi. hieu va am thuc dan ((danh vai) or (danh va)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sach ty)) nang co hoi. hieu va am thuc dan ((danh vai) OR (danh va)) cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) OR (sach ty)) nang co hoi. hieu va am thuc dan ((danh vai) or (danh va)) cua triet*".