Perhaps you should try some spelling variations:
thien danh » thien anh, thien dang, thien thanh
hanh dung » thanh dung, anh dung, hanh dong
dung cong » dung trong
dan khoan » dan khoa, dai khoang, toan khoan
khoan cam » khoa cam, khoan va, phan cam
dung qua » duong qua, dung quan, dung cua
qua dung » quang dung, su dung, qua song
cong dan » cong san, cong tan, huong dan

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((dieu hanh) or (thien danh)) - hanh dung qua dung cong dan khoan cam~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((dieu hanh) OR (thien danh)) - hanh dung qua dung cong dan khoan cam*.