Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
danh vai » danh sai, danh va, doanh van
day danh » day manh, dai danh, dao danh
nam thuc » nam thuoc, am thuc, nam tu
thu sach » tu sach, thuat sach, thuoc sach
hoa doi » hoa dai, hoc doi, xoa doi
ky dang » ky nang, ky danh
ky lang » ky nang, ky tang, tay lang
vai cua » dai cua, hai cua, lai cua
hieu va » lieu va, hieu qua

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

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