Perhaps you should try some spelling variations:
quang thanh » quan thanh, hoang thanh, muong thanh
doanh doanh » toan doanh, doanh hoan, doanh thanh
cong quang » luong quang, thong quang, duong quang
thanh chau » thanh cha, thanh cham, thanh chu
hien sach » dien sach, kien sach, thien hach
va hang » van hang, va lang, va hanh
va nang » van nang, da nang, kha nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien sach - doanh doanh ((va hang) or (((va nang) OR (cam nang)))) cong quang thanh chau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien sach - doanh doanh ((va hang) OR (((va nang) OR (cam nang)))) cong quang thanh chau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien sach - doanh doanh ((va hang) or (((va nang) OR (cam nang)))) cong quang thanh chau".
• Adding a wildcard symbol may retrieve word variants: hoc hien sach - doanh doanh ((va hang) or (((va nang) OR (cam nang)))) cong quang thanh chau*.