Perhaps you should try some spelling variations:
vien nganh » vien thanh
manh trung » manh tung, thanh trung, manh hung
hieu xanh » chieu xanh, hieu manh, hieu nganh
cua hang » cua nhung, cua cong, cua ban
cua dang » cua cong, cua ban
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 xanh) or (vien nganh)) - manh trung ((cua hang) or (cua dang)) cong dan chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu xanh) OR (vien nganh)) - manh trung ((cua hang) OR (cua dang)) cong dan chan cau.
• Adding a wildcard symbol may retrieve word variants: doc ((hieu xanh) or (vien nganh)) - manh trung ((cua hang) or (cua dang)) cong dan chan cau*.