Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
tang luan » dung luan
cong danh » cuong danh, cong dan, cong thanh
tang cua » mang cua, hang cua, thong cua
danh van » doanh van, dang van, dinh 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 xanh) or (chieu sach)) - hanh ((tang cua) OR (tang luan)) nhung cong danh van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (chieu sach)) - hanh ((tang cua) OR (tang luan)) nhung cong danh van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (chieu sach)) - hanh ((tang cua) OR (tang luan)) nhung cong danh van ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (chieu sach)) - hanh ((tang cua) OR (tang luan)) nhung cong danh van ban*.