Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ban hang » ngan hang
mai khoi » mai khoa, tai khoa, cac khoi
va cham » va chat, va tham
hang vi » hang va, hanh vi, hang di
duc ban » duc tan, duc van, dua ban
ve cham » ve chat, vu cham, ve chim
sac ky » cac ky, sai ky
ma hoi » mai hoi, xa hoi, ma hoa
vi cua » vai cua, di cua
tu sac » tu sach, tu cac, tu san

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

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