Perhaps you should try some spelling variations:
thanh thong » thanh thuong, thanh hong, thanh thang
chieu tach » chieu sach, chiu trach, chieu tinh
chiet tach » chieu sach
vung cong » dung cong, vung dong, vung song
than phan » thanh phan, toan phan, thanh pham
thong tu » phong tuc, thong tin, thong ke
tan phan » toan phan, van phan, tai phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu tach) or (chiet tach)) - thanh thong tu vung cong ((tan phan) or (than phan)) tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu tach) OR (chiet tach)) - thanh thong tu vung cong ((tan phan) OR (than phan)) tu.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu tach) or (chiet tach)) - thanh thong tu vung cong ((tan phan) or (than phan)) tu*.