Perhaps you should try some spelling variations:
thieu tinh » chieu tinh, thien tinh, lieu tinh
hanh trang » thanh trung, canh tranh, hanh trinh
hanh tang » anh tang, hanh mang, hanh tung
dung cong » dung trong
cua dung » cua dang, cua dong, qua dung
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan ban » van ban

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