Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
chieu sang » chieu sach, chieu xanh, hieu lang
cong thanh » cong trinh, truong thanh
dong thanh » truong thanh
ho chieu » theo chieu, hoc thieu, doi chieu
tuong va » truong va, thuong va, luong va
cong tan » cong tac, cong san, cong ty
toan cao » toan ban, toan tap
va nang » van nang, da nang, cam nang

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