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