Perhaps you should try some spelling variations:
doanh ban » doanh bat, doanh van, doanh nhan
va doanh » van doanh, vay doanh, va danh
toc sach » doc sach, thuoc sach, nuoc sach
hoc sach » hoc sinh, hoc cac, hoc anh
ky dung » ly dung, ky dang, ky vung
dung ha » dung va, dung he, dung khoa
van cac » van hac, van bac, dan cac
van cau » van dau, van hau, van chat
ban cua » ban quan
ha hoi » hoa hoi, ha noi, xa hoi
toc va » hoc va, toc ta, tuc va
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc sach) OR (hoc sach)) ky dung ha hoi. thien ((van cac) or (van cau)) toc va doanh ban cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (hoc sach)) ky dung ha hoi. thien ((van cac) OR (van cau)) toc va doanh ban cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) OR (hoc sach)) ky dung ha hoi. thien ((van cac) or (van cau)) toc va doanh ban cua te*".