Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
cua thong » cua thuong, cua tong, suat thong
cua khong » hua khong, cua phuong, cua thuong
thanh lap » thanh san, phan lap, thanh hai
ho chieu » theo chieu, hoc thieu, doi chieu
cong tan » cong tac, cong san, cong thanh
toan ban » van ban

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 khong)) cong tan ((toan ban) or (thanh lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - thanh trung ((cua thong) OR (cua khong)) cong tan ((toan ban) OR (thanh lap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - thanh trung ((cua thong) OR (cua khong)) cong tan ((toan ban) or (thanh lap))".
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - thanh trung ((cua thong) OR (cua khong)) cong tan ((toan ban) or (thanh lap))*.