Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thai cua » than cua, tai cuc, tri cua
hieu van » hieu va, thien van, lieu va
van chao » van chat, van hao, van cho
nang mai » nang ma, nang tai, lang mai
mai hoi » mai khoi, dai hoi, lai hoi
va hanh » van hanh, va thanh, ban hanh
va danh » va dinh, va dan, dia danh
su cao » cu cao, vu cao, su co
su cac » tu cac, su can, eu cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su cac) OR (su cao)) ky nang mai hoi. hieu van chao xu ((va hanh) or (va danh)) thai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su cac) OR (su cao)) ky nang mai hoi. hieu van chao xu ((va hanh) OR (va danh)) thai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su cac) OR (su cao)) ky nang mai hoi. hieu van chao xu ((va hanh) or (va danh)) thai cua triet".
• Adding a wildcard symbol may retrieve word variants: ((su cac) OR (su cao)) ky nang mai hoi. hieu van chao xu ((va hanh) or (va danh)) thai cua triet*.