Perhaps you should try some spelling variations:
so nganh » so ngan, hoc nganh, moi nganh
nganh ky » nganh y, nganh xay, hanh ky
su triet » su viet, su tien, ve triet
ve pham » vi pham, v pham, ve phat
tang ma » mang may, tang van
ky tang » ky nang, ky dang, kho tang
danh di » danh du, danh dien, danh gia
xanh di » vanh dai, xanh tai
ve phan » va phan, ke phan, ve phat
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: so nganh ky tang ma hoi. hieu ((ve pham) or (ve phan)) duc va ((danh di) OR (xanh di)) su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so nganh ky tang ma hoi. hieu ((ve pham) OR (ve phan)) duc va ((danh di) OR (xanh di)) su triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so nganh ky tang ma hoi. hieu ((ve pham) or (ve phan)) duc va ((danh di) OR (xanh di)) su triet*".