Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, lieu tinh
thien tinh » khien tinh, thien minh, tien tinh
canh luan » doanh luan, tranh luan, chinh luan
van nhung » van nhuong, van hung, van phung
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan cau » phan cau, can cau, chinh cau

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