Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh trinh » canh tranh, hanh chinh
hoc chieu » hoc thieu, ho chieu, hoc hien
hua khong » cua khong, hoac khong, phuc khong
hoa khong » khoi khong, hoa cong, he khong
cong dan » cong san, cong tan, huong dan
khan cap » khan ap, khoan cam, phan cac
than cap » thanh lap, thanh cac, than cua

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 xanh - hanh trinh ((hua khong) or (hoa khong)) cong dan ((khan cap) OR (than cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu xanh - hanh trinh ((hua khong) OR (hoa khong)) cong dan ((khan cap) OR (than cap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu xanh - hanh trinh ((hua khong) or (hoa khong)) cong dan ((khan cap) OR (than cap))".
• Adding a wildcard symbol may retrieve word variants: hoc chieu xanh - hanh trinh ((hua khong) or (hoa khong)) cong dan ((khan cap) OR (than cap))*.