Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
cua khong » hua khong, cua phuong, cua thuong
khoan cam » khoa cam, khoan va, phan cam
ho chieu » theo chieu, hoc thieu, doi chieu
cua tong » cua cong, cua dong, cua nong
cong dan » cong san, cong tan, huong dan
khan cap » khan ap, than cap, phan cac

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 - thanh trung ((cua khong) or (cua tong)) cong dan ((khan cap) or (khoan cam))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - thanh trung ((cua khong) OR (cua tong)) cong dan ((khan cap) OR (khoan cam)).
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - thanh trung ((cua khong) or (cua tong)) cong dan ((khan cap) or (khoan cam))*.