Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
tong cong » trong cong, dung cong, dang cong
cong cong » cong dong, trong cong, dung cong
van khan » van khanh, van khang, van phan
khan cap » khan ap, than cap, khoan cam

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