Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh tranh » canh tranh, hanh trang, nhanh thanh
lanh tranh » canh tranh, lan tranh, sach tranh
hanh trinh » canh tranh, hanh chinh
doi chieu » doc hieu, doi chi, ho chieu
dung cong » dung trong
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan ban » van ban

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

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