Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
va trong » va truong, va thong, va tuong
ban khan » ban than, ban chan, ban thanh
ban nhan » ban than, van nhan, ban thanh
tung va » trung va, tuong va, dung va

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 sach - thanh tung va trong cong ((ban khan) or (ban nhan)) ap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - thanh tung va trong cong ((ban khan) OR (ban nhan)) ap*.