Perhaps you should try some spelling variations:
hanh trung » thanh trung, manh trung, danh trung
hanh trang » thanh trung, canh tranh, hanh trinh
thong cong » trong cong, tong cong, thong thong
hoc thieu » hoc hien
cua thong » cua thuong, cua khong, cua tong
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 (toc thieu)) sach - ((hanh trung) OR (hanh trang)) cua thong cong dan than ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (toc thieu)) sach - ((hanh trung) OR (hanh trang)) cua thong cong dan than ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (toc thieu)) sach - ((hanh trung) OR (hanh trang)) cua thong cong dan than ban".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (toc thieu)) sach - ((hanh trung) OR (hanh trang)) cua thong cong dan than ban*.