Perhaps you should try some spelling variations:
thanh trung » thanh tung
cua thuong » cua truong, cua phuong, ca thuong
hieu manh » chieu xanh, hieu nganh, dieu hanh
doc hieu » toc thieu, hoc thieu, hoc hien
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan cau » phan cau, can cau, chinh cau

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 manh - thanh trung ((cua cong) or (cua thuong)) cong dan chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu manh - thanh trung ((cua cong) OR (cua thuong)) cong dan chan cau.
• Adding a wildcard symbol may retrieve word variants: doc hieu manh - thanh trung ((cua cong) or (cua thuong)) cong dan chan cau*.