Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
cham duc » pham duc, cham soc, pham duy
tang tao » sang tao, tang tai, nang tao
duc ban » duc tan, duc van, dua ban
tu cach » tu cac
hieu ve » hieu va, hieu van
ky tang » ky nang, ky dang, kho tang
so sach » so sanh, bo sach, co sach
ve cham » va cham, ve chat, vu cham
ha van » hoa van, nha van, va van
ha va » hoa va, nha va, cha va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (so sach)) ky tang tao boi. hieu ve cham duc ban thanh ((ha va) OR (ha van)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (so sach)) ky tang tao boi. hieu ve cham duc ban thanh ((ha va) OR (ha van)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cach) or (so sach)) ky tang tao boi. hieu ve cham duc ban thanh ((ha va) OR (ha van)) triet".
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (so sach)) ky tang tao boi. hieu ve cham duc ban thanh ((ha va) OR (ha van)) triet*.