Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
nganh ky » nganh y, nganh xay, hanh ky
va triet » va thiet, va trien, ve triet
canh ky » hanh ky, canh tay, thanh ky
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cac toc » cac toi, cac nuoc, cac thoi
va hanh » van hanh, va thanh, va danh
toc va » hoc va, toc ta, tuc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((canh ky) or (nganh ky)) nang xa hoi. hieu va cac toc va hanh vi ((cua triet) OR (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((canh ky) OR (nganh ky)) nang xa hoi. hieu va cac toc va hanh vi ((cua triet) OR (va triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((canh ky) or (nganh ky)) nang xa hoi. hieu va cac toc va hanh vi ((cua triet) OR (va triet))*".