Perhaps you should try some spelling variations:
thanh trung » thanh tung
hieu xanh » chieu xanh, hieu manh, hieu nganh
cap thuoc » cay thuoc, phap thuoc, cap nuoc
cao thuoc » cay thuoc, cua thuoc, nam thuoc
tan thanh » tran thanh, tang thanh, toan thanh
doc hieu » toc thieu, hoc thieu, hoc hien
tan than » tan tran, ban than, tam than

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

• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - thanh trung ((cap thuoc) OR (cao thuoc)) trong ((tan than) OR (tan thanh)) cap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - thanh trung ((cap thuoc) OR (cao thuoc)) trong ((tan than) or (tan thanh)) cap~".
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - thanh trung ((cap thuoc) OR (cao thuoc)) trong ((tan than) or (tan thanh)) cap*.