Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hoc chieu » hoc thieu, ho chieu, hoc hien
trinh cua » trinh luat, trinh quan, trinh luan
tinh cua » sinh cua, tinh chat, tranh cua
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
gian man » gian dan, gian lan, gian van

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 sang - nhanh ((tinh cua) OR (trinh cua)) nhung ((cong dan) or (cong san)) gian man~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sang - nhanh ((tinh cua) OR (trinh cua)) nhung ((cong dan) OR (cong san)) gian man.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sang - nhanh ((tinh cua) OR (trinh cua)) nhung ((cong dan) or (cong san)) gian man".
• Adding a wildcard symbol may retrieve word variants: hoc chieu sang - nhanh ((tinh cua) OR (trinh cua)) nhung ((cong dan) or (cong san)) gian man*.