Perhaps you should try some spelling variations:
hien xanh » hien hanh, hien nhanh, chieu xanh
tranh cua » doanh cua, manh cua
hang cong » dang cong, hang nong, bang cong
cua hang » cua dang, cua nhung, cua cong
dan toan » manh toan, xuan toan, dien toan
van toan » van tuan, van tan, van thanh
dan than » dan chan, ban than, van than

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 hang cong ((((dan toan) or (van toan))) or (dan than)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - canh tranh cua hang cong ((((dan toan) OR (van toan))) OR (dan than)) ban.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - canh tranh cua hang cong ((((dan toan) or (van toan))) or (dan than)) ban*.