Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
ho chieu » theo chieu, hoc thieu, doi chieu
trung ap » trung cap, trung lap, trung tam
cong ban » cong bang, cong dan, dong ban
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
toan ban » van ban
ap dung » xay dung, van dung

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 ap dung ((((cong ban) OR (cong tan))) or (cong san)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - thanh trung ap dung ((((cong ban) OR (cong tan))) OR (cong san)) toan ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - thanh trung ap dung ((((cong ban) OR (cong tan))) or (cong san)) toan ban*".