Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu tinh » chieu tinh, thien tinh, lieu tinh
trung hoa » trung hoc, trung ha
hoa nhung » hoc nhung, hon nhung, va nhung
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
thai cao » tai cao, thoai cac, thuat cao

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)) - thanh trung hoa nhung ((cong dan) or (cong san)) thai cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu tinh) OR (trieu tinh)) - thanh trung hoa nhung ((cong dan) OR (cong san)) thai cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu tinh) OR (trieu tinh)) - thanh trung hoa nhung ((cong dan) or (cong san)) thai cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu tinh) OR (trieu tinh)) - thanh trung hoa nhung ((cong dan) or (cong san)) thai cao*.