Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, canh tinh
han phuong » van phuong, dan phuong, han thuong
hieu lang » chieu sang, hieu quang, nhieu tang
trinh han » trinh quan
hung manh » nhung manh, hung anh, duong manh
tung manh » duong manh, luong manh, nhung manh
toan cao » toan ban, toan tap
ho hieu » ho chieu, hoi hieu, nho hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu lang - canh trinh han phuong ((hung manh) or (tung manh)) ((van ban) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - canh trinh han phuong ((hung manh) OR (tung manh)) ((van ban) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - canh trinh han phuong ((hung manh) or (tung manh)) ((van ban) or (toan cao))*.