Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien danh
trung phan » trung thanh, trung ha, trung tuan
thien anh » thien danh, tien anh, thien thanh
dung phan » dung nhan, dung luan, dung ha
dung cong » dung trong
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: hoc ((thieu xanh) OR (thien anh)) - thanh ((trung phan) or (dung phan)) dung cong san toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (thien anh)) - thanh ((trung phan) OR (dung phan)) dung cong san toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) OR (thien anh)) - thanh ((trung phan) or (dung phan)) dung cong san toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) OR (thien anh)) - thanh ((trung phan) or (dung phan)) dung cong san toan ban*.