Perhaps you should try some spelling variations:
thong cong » trong cong, thong thong, phong chong
hoc thieu » toc thieu, hoc hien
doi chieu » doc hieu, doi chi, ho chieu
hanh tang » hanh trang, anh tang, hanh mang
tang luan » dung luan
tong cong » trong cong, cong cong, dung cong
dan van » dang van, doan van, dao van

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) or (doi chieu)) xanh - hanh tang luan ((thong cong) or (tong cong)) dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (doi chieu)) xanh - hanh tang luan ((thong cong) OR (tong cong)) dan van ban.
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (doi chieu)) xanh - hanh tang luan ((thong cong) or (tong cong)) dan van ban*.