Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
quang dung » quang trung, ung dung, cuong dung
canh tinh » hanh tinh, manh tinh, canh tranh
dung cong » dung trong
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than tap » toan tap, han tap, phan tap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chieu tinh) or (diep tinh)) - canh tinh quang dung cong dan than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu tinh) OR (diep tinh)) - canh tinh quang dung cong dan than tap*.