Perhaps you should try some spelling variations:
ban thanh » ban hang
ban hanh » ban hang
so sanh » do sanh
sanh ky » hanh ky, sang ky, nganh ky
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
cac tru » ca tru, cac tro, cac thu
vai cua » hai cua, lai cua, bai cua
ma hoi » mai hoi, xa hoi, ma hoa
ve cac » va cac, vien cac

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 nang ma hoi. hieu ve cac tru ((ban thanh) OR (ban hanh)) ((dai cua) or (vai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sanh ky nang ma hoi. hieu ve cac tru ((ban thanh) OR (ban hanh)) ((dai cua) OR (vai cua)) triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sanh ky nang ma hoi. hieu ve cac tru ((ban thanh) OR (ban hanh)) ((dai cua) or (vai cua)) triet*".