Perhaps you should try some spelling variations:
dang cuong » tang cuong, quang cuong, dang thuong
lanh tranh » canh tranh, lan tranh, hanh trinh
dang cong » dung cong
danh toan » manh toan, anh toan, dan toan
doc hieu » toc thieu, hoc thieu, hoc hien
tranh va » tranh van, trang va, trinh va
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 hieu) or (theo tieu)) xanh - lanh tranh va ((dang cuong) OR (dang cong)) danh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (theo tieu)) xanh - lanh tranh va ((dang cuong) OR (dang cong)) danh toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc hieu) or (theo tieu)) xanh - lanh tranh va ((dang cuong) OR (dang cong)) danh toan ban".
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (theo tieu)) xanh - lanh tranh va ((dang cuong) OR (dang cong)) danh toan ban*.