Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hoc chieu » ho chieu, hoc hien, hoc dieu
hoc thieu » toc thieu, hoc hien
hanh sinh » hanh tinh, hanh dinh, hinh sinh
cua nhung » va nhung
sinh cua » manh cua, dinh cuu, sinh va
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.

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc chieu) OR (hoc thieu)) sach - hanh sinh cua nhung cong dan van ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chieu) OR (hoc thieu)) sach - hanh sinh cua nhung cong dan van ban".
• Adding a wildcard symbol may retrieve word variants: ((hoc chieu) OR (hoc thieu)) sach - hanh sinh cua nhung cong dan van ban*.