Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
san doanh » van doanh, toan doanh, vay doanh
toc sach » hoc sach, thuoc sach, nuoc sach
thi hanh » thi thanh
van quan » van ban
doc sach » hoc sach, nuoc sach, dac sac
cac toc » cac toi, cac nuoc, cac thoi
thi van » thi lan, thi nang
dang ha » dong ha, dung ha, lang ha
ky dang » ky nang, ky danh
quan te » quan he, quan ve, quang tue
ha hoi » hoa hoi, ha noi, xa hoi

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 (doc sach)) ky dang ha hoi. ((thi van) OR (thi hanh)) cac toc san doanh van quan te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (doc sach)) ky dang ha hoi. ((thi van) OR (thi hanh)) cac toc san doanh van quan te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) or (doc sach)) ky dang ha hoi. ((thi van) OR (thi hanh)) cac toc san doanh van quan te*".