Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, mot chieu
hanh luan » khanh luan, hang luan, hanh luat
ho chieu » theo chieu, hoc thieu, mot chieu
van dung » van dong, xay dung
cong van » cong vang, cong san, song van
van toan » van tuan, van tan, van thanh
toan cao » toan ban, toan tap

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 (doi chieu)) lang - hanh luan ((van dung) or (tin dung)) cong van toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chieu)) lang - hanh luan ((van dung) OR (tin dung)) cong van toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (doi chieu)) lang - hanh luan ((van dung) or (tin dung)) cong van toan cao".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (doi chieu)) lang - hanh luan ((van dung) or (tin dung)) cong van toan cao*.