Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
lanh tranh » canh tranh, lan tranh, sach tranh
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
ho chieu » theo chieu, hoc thieu, doi chieu
dan than » dan chan, ban than, dan toan
van than » van thanh, van thang, van tuan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu xanh - ((lanh tranh) or (hanh trinh)) va nhung cong ((dan than) OR (van than)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - ((lanh tranh) OR (hanh trinh)) va nhung cong ((dan than) OR (van than)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu xanh - ((lanh tranh) or (hanh trinh)) va nhung cong ((dan than) OR (van than)) cao".
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - ((lanh tranh) or (hanh trinh)) va nhung cong ((dan than) OR (van than)) cao*.