Perhaps you should try some spelling variations:
trung tuan » trung thanh, trung tam, tran tuan
nhung cong » dung cong, thong cong, hang cong
hoc chieu » hoc thieu, hoc hien, hoc dieu
ho chieu » theo chieu, hoc thieu, doi chieu
dung cua » dung luan, dung cho
cong dan » cong san, cong tan, huong dan
dan van » dang van, doan van, dao van

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: ((hoc chieu) OR (ho chieu)) xanh - manh ((dung cua) OR (trung tuan)) nhung cong dan van ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chieu) OR (ho chieu)) xanh - manh ((dung cua) or (trung tuan)) nhung cong dan van ban~".
• Adding a wildcard symbol may retrieve word variants: ((hoc chieu) OR (ho chieu)) xanh - manh ((dung cua) or (trung tuan)) nhung cong dan van ban*.