Perhaps you should try some spelling variations:
hieu xanh » chieu xanh, hieu manh, hieu nganh
lanh manh » lanh tranh, lan anh, van manh
cua thong » cua thuong, cua khong, suat thong
doc hieu » toc thieu, hoc thieu, hoc hien
cua tong » cua cong, cua dong, cua nong
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - lanh manh ((cua thong) OR (cua tong)) cong dan toan cao~".
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - lanh manh ((cua thong) OR (cua tong)) cong dan toan cao*.