Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cham duc » pham duc, cham soc, pham duy
ban hang » ngan hang
hieu van » thien van, lieu va, hieu ve
hang vi » hang va, hanh vi, hang di
mai hoi » mai khoi, dai hoi, lai hoi
duc ban » duc tan, duc van, dua ban
hieu va » lieu va, hieu qua
vi cua » vai cua, di cua
tu san » thu san, tu ban, tu can
san ky » sang ky, van ky, dan ky
ma hoi » xa hoi, ma hoa, me hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu san ky nang ((ma hoi) or (mai hoi)). ((hieu van) OR (hieu va)) cham duc ban hang vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky nang ((ma hoi) OR (mai hoi)). ((hieu van) OR (hieu va)) cham duc ban hang vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu san ky nang ((ma hoi) or (mai hoi)). ((hieu van) OR (hieu va)) cham duc ban hang vi cua triet".
• Adding a wildcard symbol may retrieve word variants: tu san ky nang ((ma hoi) or (mai hoi)). ((hieu van) OR (hieu va)) cham duc ban hang vi cua triet*.