Perhaps you should try some spelling variations:
doanh luan » doanh nhan
hoc thieu » toc thieu, hoc hien
van doanh » toan doanh, van dong, van thanh
luan bang » luan nang, luan ban, luan tang
bang cong » dang cong, bang song, hang cong
ho chieu » theo chieu, doi chieu, mot chieu
tac phan » tac pham, tai phan, cac phan
tac phat » tac pham, tam phat, tan phat

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) OR (hoc thieu)) tinh - van doanh luan bang cong ((tac phan) or (tac phat)) cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) tinh - van doanh luan bang cong ((tac phan) OR (tac phat)) cac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (hoc thieu)) tinh - van doanh luan bang cong ((tac phan) or (tac phat)) cac".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (hoc thieu)) tinh - van doanh luan bang cong ((tac phan) or (tac phat)) cac*.