Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
hoc chieu » hoc thieu, ho chieu, hoc hien
dung danh » dung doanh, dung dan, cuong danh
danh toan » manh toan, anh toan, dan toan
cua tong » cua dong, cua nong, cua song
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: hoc chieu sang - thanh trung ((cua tong) OR (cua cong)) dung danh toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sang - thanh trung ((cua tong) OR (cua cong)) dung danh toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc chieu sang - thanh trung ((cua tong) OR (cua cong)) dung danh toan ban*.