Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
cua thuong » cua truong, cua phuong, ca thuong
cua thong » cua khong, cua tong, suat thong
ho chieu » theo chieu, hoc thieu, doi chieu
cong tac » cong ty
tac gian » tac gia, tac giai, tac giam
gian cac » gian dan, gian cua

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 thong) or (cua thuong)) cong tac gian cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - thanh trung ((cua thong) OR (cua thuong)) cong tac gian cac.
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - thanh trung ((cua thong) or (cua thuong)) cong tac gian cac*.