Perhaps you should try some spelling variations:
tranh quang » tran quang, trinh quang, tinh quang
thieu xanh » hieu manh, thien anh, thien danh
chieu xanh » chieu sach, chieu sang, chieu tinh
tranh quan » trinh quan, tranh luan, thanh quan
cong thanh » dong thanh, cong trinh, cong tan
thanh toan » thanh hoa, thanh san, tinh toan
bang cong » dang cong, bang song, hang cong
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 ((thieu xanh) OR (chieu xanh)) - canh ((tranh quan) or (tranh quang)) bang cong thanh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (chieu xanh)) - canh ((tranh quan) OR (tranh quang)) bang cong thanh toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) OR (chieu xanh)) - canh ((tranh quan) or (tranh quang)) bang cong thanh toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) OR (chieu xanh)) - canh ((tranh quan) or (tranh quang)) bang cong thanh toan ban*.