Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
danh vai » danh sai, danh va, doanh van
ky lang » ky nang, ky tang, tay lang
ky dang » ky nang, ky danh
hieu va » lieu va, hieu qua
cam duc » cam xuc, cao duc, pham duc
va danh » va dinh, va dan, va hanh
cua tre » cua te, cuu tre, dua tren
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cac ((ky lang) OR (ky dang)) van hoa. hieu va cam duc va danh vai ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ((ky lang) OR (ky dang)) van hoa. hieu va cam duc va danh vai ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac ((ky lang) OR (ky dang)) van hoa. hieu va cam duc va danh vai ((cua tre) or (cua triet))".
• Adding a wildcard symbol may retrieve word variants: tu cac ((ky lang) OR (ky dang)) van hoa. hieu va cam duc va danh vai ((cua tre) or (cua triet))*.