Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, canh tinh
manh huong » anh huong, manh hung, manh cuong
canh duong » anh duong, thanh duong, anh huong
hoc thien » hoc hien, hoc thieu, hoc thiet
thien anh » thien danh, tien anh, thien thanh
dan van » dang van, doan van, dao van

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: hoc thien anh - canh trinh luat ((manh huong) OR (canh duong)) dan van ban~.
• Adding a wildcard symbol may retrieve word variants: hoc thien anh - canh trinh luat ((manh huong) or (canh duong)) dan van ban*.