Perhaps you should try some spelling variations:
hoc nganh » hoc nhanh
cau triet » cau trieu, su triet, cua triet
hieu van » hieu va, thien van, lieu va
van hanh » van thanh, ban hanh, van anh
van cac » van hac, van cau, van bac
va hanh » va thanh, va danh, ban hanh
y nang » ky nang, ly nang, may nang
v nang » va nang, vu nang, van nang
vi cau » va cau, ve cau, di cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc nganh ((y nang) OR (v nang)) xa hoi. hieu van cac du ((van hanh) or (va hanh)) vi cau triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc nganh ((y nang) OR (v nang)) xa hoi. hieu van cac du ((van hanh) OR (va hanh)) vi cau triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc nganh ((y nang) OR (v nang)) xa hoi. hieu van cac du ((van hanh) or (va hanh)) vi cau triet".
• Adding a wildcard symbol may retrieve word variants: hoc nganh ((y nang) OR (v nang)) xa hoi. hieu van cac du ((van hanh) or (va hanh)) vi cau triet*.