Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh luan » trinh luat, trinh quan, trinh han
luan phung » luan phuong, luan chung, luan phong
phung cong » nhung cong, phong cong, nhung chong
danh thanh » dinh thanh, dang thanh, nhanh thanh
hieu xanh » chieu xanh, hieu manh, hieu nganh
doc hieu » toc thieu, hoc thieu, hoc hien
van tuan » van quan, van ban, anh tuan

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 - hanh trinh luan phung cong ((van tuan) OR (danh thanh)) ban~.
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - hanh trinh luan phung cong ((van tuan) or (danh thanh)) ban*.