Perhaps you should try some spelling variations:
ban hanh » ban hang
su triet » su viet, su tien, ve triet
mai hoi » mai khoi, dai hoi, lai hoi
hieu ve » hieu va, hieu van
xuc ban » duc ban, cuc ban, quoc ban
su dai » sau dai, su tai, su hai
ve cam » ve cham, ve cac, va cam
vi su » va su, ve su, ki su

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su dai) or (si dai)) ky nang ((ma hoa) or (mai hoi)). hieu ve cam xuc ban hanh vi su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su dai) OR (si dai)) ky nang ((ma hoa) OR (mai hoi)). hieu ve cam xuc ban hanh vi su triet.
• Adding a wildcard symbol may retrieve word variants: ((su dai) or (si dai)) ky nang ((ma hoa) or (mai hoi)). hieu ve cam xuc ban hanh vi su triet*.