Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
chieu sang » chieu sach, chieu xanh, hieu lang
hanh trinh » hanh chinh
hang cong » dang cong, hang nong, bang cong
cua hang » cua dang, cua nhung, cua cong
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: hoc ((thieu xanh) or (chieu sang)) - ((hanh trinh) OR (canh tranh)) cua hang cong dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (chieu sang)) - ((hanh trinh) OR (canh tranh)) cua hang cong dan toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (chieu sang)) - ((hanh trinh) OR (canh tranh)) cua hang cong dan toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (chieu sang)) - ((hanh trinh) OR (canh tranh)) cua hang cong dan toan ban*.