Perhaps you should try some spelling variations:
thanh trung » thanh tung
chiet tach » chieu sach
ho chiet » ho chieu, ho thiet, hoc thiet
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap
cap han » cap phan, cap can, cap van
cap hay » cap xay, cap giay, cap nhat

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chiet tach - thanh trung ((cap han) OR (cap hay)) cong dan than cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chiet tach - thanh trung ((cap han) OR (cap hay)) cong dan than cau".
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - thanh trung ((cap han) OR (cap hay)) cong dan than cau*.