Perhaps you should try some spelling variations:
hoc thuyet » hoc chuyen
canh doanh » hanh doanh, chinh doanh, doanh doanh
dang thanh » dong thanh, dang hanh, hoang thanh
thanh chau » thanh cha, thanh cham, thanh chu
doanh cua » doanh luan
dung cong » dung trong
ho chiet » ho chieu, ho thiet, hoc thiet

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chiet) or (hoc thuyet)) tach - canh doanh cua ((dung cong) or (thong thong)) dang thanh chau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chiet) OR (hoc thuyet)) tach - canh doanh cua ((dung cong) OR (thong thong)) dang thanh chau.
• Adding a wildcard symbol may retrieve word variants: ((ho chiet) or (hoc thuyet)) tach - canh doanh cua ((dung cong) or (thong thong)) dang thanh chau*.