Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
dong cong » duong cong, dung cong, dang cong
hanh han » hanh nhan, hanh phan, hanh san
cao dong » cao dang, lao dong, cao cong
cong dan » cong san, cong tan, huong dan
han cao » han cho, han gao, hoang cao

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) OR (chieu sach)) - hanh han cao dong cong dan ((toan ban) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (chieu sach)) - hanh han cao dong cong dan ((toan ban) OR (van ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) OR (chieu sach)) - hanh han cao dong cong dan ((toan ban) or (van ban))".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) OR (chieu sach)) - hanh han cao dong cong dan ((toan ban) or (van ban))*.