Perhaps you should try some spelling variations:
thong quang » thong quan, thong qua, luong quang
chieu xanh » chieu sach, chieu sang, chieu tinh
trong quan » thong quan, tong quan, luong quan
cong thanh » dong thanh, cong trinh, cong tan
doi chieu » doc hieu, doi chi, ho chieu
cong danh » cuong danh, cong dan, cong khanh
toan cao » toan ban, toan tap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu xanh - hanh ((trong quan) OR (thong quang)) duong ((cong danh) or (cong thanh)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu xanh - hanh ((trong quan) OR (thong quang)) duong ((cong danh) OR (cong thanh)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu xanh - hanh ((trong quan) OR (thong quang)) duong ((cong danh) or (cong thanh)) toan cao".
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - hanh ((trong quan) OR (thong quang)) duong ((cong danh) or (cong thanh)) toan cao*.