Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, chau tinh, kieu tinh
lieu tinh » trieu tinh, diep tinh, bien tinh
trinh hua » trinh hoa, trinh cua, trinh qua
trinh ha » trinh han, trinh hoa, trinh nha
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 ((chieu tinh) or (lieu tinh)) - hanh ((trinh hua) OR (trinh ha)) trong cong dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu tinh) OR (lieu tinh)) - hanh ((trinh hua) OR (trinh ha)) trong cong dan toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu tinh) or (lieu tinh)) - hanh ((trinh hua) OR (trinh ha)) trong cong dan toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu tinh) or (lieu tinh)) - hanh ((trinh hua) OR (trinh ha)) trong cong dan toan ban*.