Perhaps you should try some spelling variations:
doanh than » doanh thanh, doanh nhan, doanh phan
hoc chieu » hoc thieu, ho chieu, hoc hien
tinh cong » trinh cong, tinh cuong, minh cong
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van phan
phan van » pham van, thanh van, luan van
than va » thanh va, nhan va, toan va
va tinh » may tinh

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc chieu) or (toc thieu)) sang - doanh than va tinh cong dan phan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chieu) OR (toc thieu)) sang - doanh than va tinh cong dan phan van*.