Perhaps you should try some spelling variations:
hien xanh » hien hanh, hien nhanh, chieu xanh
tranh cua » doanh cua, manh cua
bang cong » dang cong, bang song, hang cong
cua bang » chua bang, cua ban, cua dang
dan than » dan chan, van than, dan toan
ban than » ban thanh, van thanh, ban hang
van tuan » van quan, van ban, anh tuan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien xanh - canh tranh cua bang cong ((((dan than) or (ban than))) or (van tuan)) cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - canh tranh cua bang cong ((((dan than) OR (ban than))) OR (van tuan)) cap.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - canh tranh cua bang cong ((((dan than) or (ban than))) or (van tuan)) cap*.