Perhaps you should try some spelling variations:
thanh thong » thanh thuong, thanh hong, thanh thang
theo chiet » theo chieu, thep thiet
chiet tach » chieu sach
bang thanh » ban thanh, dang thanh, tang thanh
dung cong » dung trong
bang than » ban than, sang than, bang nhan
thong su » thong tu, thong cua, thong qua

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

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