Perhaps you should try some spelling variations:
doanh luan » doanh nhan
hanh cong » thanh cong, hang cong, hanh dong
doc lieu » duoc lieu, du lieu, so lieu
doc hieu » toc thieu, hoc thieu, hoc hien
han cong » phan cong, hang cong, han tong
san toan » van toan, dan toan, manh toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc lieu) OR (doc hieu)) tinh - toan doanh luan ((han cong) or (hanh cong)) san toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc lieu) OR (doc hieu)) tinh - toan doanh luan ((han cong) OR (hanh cong)) san toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc lieu) OR (doc hieu)) tinh - toan doanh luan ((han cong) or (hanh cong)) san toan ban".
• Adding a wildcard symbol may retrieve word variants: ((doc lieu) OR (doc hieu)) tinh - toan doanh luan ((han cong) or (hanh cong)) san toan ban*.