Perhaps you should try some spelling variations:
thanh quang » thanh quan, than quang, tranh quang
chieu xanh » chieu sach, chieu sang, chieu tinh
thong cong » trong cong, tong cong, thong thong
ho chieu » theo chieu, hoc thieu, doi chieu
cong san » cong tac
san toan » van toan, dan toan, manh toan
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 xanh - phan ((thanh quang) OR (nhanh quang)) thong cong san toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu xanh - phan ((thanh quang) OR (nhanh quang)) thong cong san toan ban".
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - phan ((thanh quang) OR (nhanh quang)) thong cong san toan ban*.