Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, chau tinh, kieu tinh
hanh trang » thanh trung, canh tranh, hanh trinh
lieu tinh » trieu tinh, diep tinh, bien tinh
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan ban » can ban, chat ban, chan nan

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