Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
sach nang » cach mang, sach dung, sach danh
cong dang » cong dong, cong dan, cong dung
cua dong » chua dong, cua cong, cua nong
cua dang » cua cong, cua ban
dang van » hoang van, hang va

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 - sach nang ((cua dong) or (cua dang)) cong dang van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - sach nang ((cua dong) OR (cua dang)) cong dang van ban*.