Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu xanh » chieu sach, chieu sang, chieu tinh
hoc chieu » hoc thieu, ho chieu, hoc hien
trung co » trung bo, trong co, truong cao
hong van » hoang van, thong van, phong van
luong va » dung va
toan cao » toan ban, toan tap
co dang » cao dang, co dan, co dong

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 xanh - thanh trung co dang ((hong van) or (luong va)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu xanh - thanh trung co dang ((hong van) OR (luong va)) toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc chieu xanh - thanh trung co dang ((hong van) or (luong va)) toan cao*.