Perhaps you should try some spelling variations:
thanh dung » thanh duong, thanh tung, thanh hung
lieu tinh » trieu tinh, diep tinh, bien tinh
luan dang » luan nang, luan danh, luan dong
dang cong » dung cong
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: theo ((lieu tinh) or (may tinh)) - thanh dung luan dang cong dan than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((lieu tinh) OR (may tinh)) - thanh dung luan dang cong dan than tap*.