Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, canh tinh
van phuong » van phong, va phuong, van phung
van chuong » van phong, van duong, van hung
hieu lang » chieu sang, hieu quang, nhieu tang
hung manh » nhung manh, hung anh, tung 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 ((van phuong) or (van chuong)) hung manh ((van ban) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - canh trinh ((van phuong) OR (van chuong)) hung manh ((van ban) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - canh trinh ((van phuong) or (van chuong)) hung manh ((van ban) or (toan cao))*.