Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
thien van » thi van
ban doanh » van doanh, san doanh, ban danh
doanh cua » doanh luan
may nang » may nong, cam nang, cao nang
nam duoc » nam thuoc, da duoc, dat duoc
duoc ban » duc ban, quoc ban, buoc ban
cua viet » ca viet, hoa viet, cua vat
cua cua » cua chua, ca cua, qua cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach ((may nang) or (ky nang)) xa hoi. thien van nam duoc ban doanh cua cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ((may nang) OR (ky nang)) xa hoi. thien van nam duoc ban doanh cua cua viet.
• Adding a wildcard symbol may retrieve word variants: thuoc sach ((may nang) or (ky nang)) xa hoi. thien van nam duoc ban doanh cua cua viet*.