Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh quan » tinh quang, trinh luat, trinh han
hieu manh » chieu xanh, hieu nganh, dieu hanh
thien anh » thien danh, tien anh, thien thanh
quan dong » quang dong, quan long, quan hoang
dong cong » duong cong, dung cong, dang cong
van thanh » ban thanh, van tuan
dan than » dan chan, ban than, van 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: hoc ((hieu manh) OR (thien anh)) - hanh trinh quan dong cong ((van thanh) OR (dan than)) cao~.
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (thien anh)) - hanh trinh quan dong cong ((van thanh) or (dan than)) cao*.