Perhaps you should try some spelling variations:
thanh tung » thanh cong
doi chieu » doi chi, mot chieu, thi chieu
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, mot chieu
doc hieu » toc thieu, hoc thieu, hoc hien
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap
tung ca » trung ca, tang ca, cung ca
ca dung » cao dung, cap dung, cu dung

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (((doi chieu) OR (doc hieu)))) sach - thanh tung ca dung cong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (((doi chieu) OR (doc hieu)))) sach - thanh tung ca dung cong dan than cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (((doi chieu) OR (doc hieu)))) sach - thanh tung ca dung cong dan than cau*".