Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
doi chieu » doc hieu, doi chi, ho chieu
tuong va » truong va, thuong va, luong va
cong dan » cong san, cong tan, huong dan
tung va » trung va, dung va, vung va
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 thieu) OR (doi chieu)) xanh - thanh ((tung va) OR (tuong va)) nhung cong dan van ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (doi chieu)) xanh - thanh ((tung va) OR (tuong va)) nhung cong dan van ban~".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (doi chieu)) xanh - thanh ((tung va) OR (tuong va)) nhung cong dan van ban*.