Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, minh trang
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
mot chieu » doi chieu, ho chieu
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than ban » thanh ban, toan ban, than man

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 (mot chieu)) sach - ((hanh trang) OR (hanh trinh)) va nhung cong dan than ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (mot chieu)) sach - ((hanh trang) OR (hanh trinh)) va nhung cong dan than ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (mot chieu)) sach - ((hanh trang) OR (hanh trinh)) va nhung cong dan than ban".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (mot chieu)) sach - ((hanh trang) OR (hanh trinh)) va nhung cong dan than ban*.