Perhaps you should try some spelling variations:
doanh phan » doanh nhan, doan phan, doanh thanh
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
phan va » nhan va, han va, phan ba
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 phan 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 phan va tinh cong dan phan van*.