Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
trinh quan » tinh quang, trinh luat, trinh han
tinh quan » tinh quang, tin quan, sinh quan
ho chieu » theo chieu, hoc thieu, doi chieu
dan than » dan chan, van than, dan toan
ban than » ban thanh, van thanh, ban hang

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: ho chieu xanh - hanh ((tinh quan) OR (trinh quan)) thanh cong ((dan than) OR (ban than)) ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu xanh - hanh ((tinh quan) OR (trinh quan)) thanh cong ((dan than) or (ban than)) ban~".
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - hanh ((tinh quan) OR (trinh quan)) thanh cong ((dan than) or (ban than)) ban*.