Perhaps you should try some spelling variations:
so nganh » so ngan, hoc nganh, moi nganh
nganh ky » nganh y, nganh xay, hanh ky
hieu van » hieu va, thien van, lieu va
van hanh » van thanh, ban hanh, van anh
nang xa » nang x, lang xa, nang ma
van cac » van hac, van cau, van bac
va danh » va dinh, va dan, va hanh
cuu tre » cau tren, cau treo
cua tre » cua te, cua triet, dua tren

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 nang xa hoi. hieu van cac du ((van hanh) or (va danh)) vi ((cuu tre) OR (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so nganh ky nang xa hoi. hieu van cac du ((van hanh) OR (va danh)) vi ((cuu tre) OR (cua tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "so nganh ky nang xa hoi. hieu van cac du ((van hanh) or (va danh)) vi ((cuu tre) OR (cua tre))".
• Adding a wildcard symbol may retrieve word variants: so nganh ky nang xa hoi. hieu van cac du ((van hanh) or (va danh)) vi ((cuu tre) OR (cua tre))*.