Perhaps you should try some spelling variations:
so sanh » do sanh
sanh ky » hanh ky, sang ky, nganh ky
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
cac dac » cac dan, cac dai, cac bac
va hanh » van hanh, va thanh, ban hanh
va danh » va dinh, va dan, dia danh
ve cac » va cac, vien cac
vi cua » vai cua, di cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sanh ky lang xa hoi. hieu ve cac dac ((va hanh) or (va danh)) vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sanh ky lang xa hoi. hieu ve cac dac ((va hanh) OR (va danh)) vi cua te.
• Adding a wildcard symbol may retrieve word variants: so sanh ky lang xa hoi. hieu ve cac dac ((va hanh) or (va danh)) vi cua te*.