Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh vai » hanh vi, hanh va, hanh tai
ban hanh » ban hang
tham luc » than luc, tham nuoc, tham thuc
vai cua » dai cua, hai cua, lai cua
luc ban » duc ban, cuc ban, luc bat
va tham » van tham, va cham, va thanh
hieu va » lieu va, hieu qua
dai hoi » dai hoc, dai hai, dai moi
mai hoi » mai khoi, lai hoi, mai doi
ky tang » ky nang, ky dang, kho tang
tu san » thu san, tu ban, tu can
tu sac » tu sach, tu cac, tu bac

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) or (tu san)) ky tang ((mai hoi) OR (dai hoi)). hieu va tham luc ban hanh vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu san)) ky tang ((mai hoi) OR (dai hoi)). hieu va tham luc ban hanh vai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sac) or (tu san)) ky tang ((mai hoi) OR (dai hoi)). hieu va tham luc ban hanh vai cua triet".
• Adding a wildcard symbol may retrieve word variants: ((tu sac) or (tu san)) ky tang ((mai hoi) OR (dai hoi)). hieu va tham luc ban hanh vai cua triet*.