Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu xanh » chieu sach, chieu sang, chieu tinh
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
trung cap » truong cao, trung tam
ho chieu » theo chieu, hoc thieu, doi chieu
ban phan » van phan, ban than, ban nhan

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - thanh trung cap ((nhung cong) OR (thong cong)) ((ban phan) OR (ban phap)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu xanh - thanh trung cap ((nhung cong) or (thong cong)) ((ban phan) OR (ban phap)) cau~".
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - thanh trung cap ((nhung cong) or (thong cong)) ((ban phan) OR (ban phap)) cau*.