Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hanh trinh » hanh chinh
luat cuong » luat cong, luat huong, luat thuong
hoc chieu » hoc thieu, ho chieu, hoc hien
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
than ban » thanh ban, toan ban, than man

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

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