Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh hoan, doanh thanh
thien hach » thien thanh
thanh chau » thanh cha, thanh cham, thanh chu
hien hanh » dieu hanh
dung cong » dung trong
tan thanh » tran thanh, tang thanh, toan thanh
doanh va » doan va, doanh tai, doanh cua
cong tan » cong tac, cong san, cong thanh
va dung » van dung, va duong, vat dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thien hach) or (hien hanh)) - doanh doanh va dung cong tan thanh chau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien hach) OR (hien hanh)) - doanh doanh va dung cong tan thanh chau.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien hach) or (hien hanh)) - doanh doanh va dung cong tan thanh chau*.