Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
lap thuc » luan thuc, phap thuc, loai thuc
tap thuc » tap tuc, tam thuc, toan thuc
danh sai » dung sai, danh bat, danh dau
va triet » va thiet, va trien, ve triet
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
va danh » va dinh, va dan, va hanh
x hoi » xa hoi, o hoi, x ho

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

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