Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
cua nhung » va nhung
ho chieu » theo chieu, hoc thieu, doi chieu
cong dan » cong san, cong dong, cong tac
cong tan » cong tac, cong san, cong thanh

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 sang - hanh tranh cua nhung ((((cong dan) OR (cong tan))) or (huong dan)) phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - hanh tranh cua nhung ((((cong dan) OR (cong tan))) OR (huong dan)) phan tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - hanh tranh cua nhung ((((cong dan) OR (cong tan))) or (huong dan)) phan tu".
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - hanh tranh cua nhung ((((cong dan) OR (cong tan))) or (huong dan)) phan tu*.