Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chieu » theo tieu, ho chieu, theo chu
chieu sang » chieu sach, chieu xanh, hieu lang
trong san » trong cac, cong san, dong san
khoan cam » khoa cam, khoan va, phan cam
trung ap » trung cap, trung lap, trung tam
than cap » khan cap, thanh lap, thanh cac
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: theo chieu sang - thanh trung ap dung trong san ((than cap) or (khoan cam))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sang - thanh trung ap dung trong san ((than cap) OR (khoan cam)).
• Adding a wildcard symbol may retrieve word variants: theo chieu sang - thanh trung ap dung trong san ((than cap) or (khoan cam))*.