Perhaps you should try some spelling variations:
thanh toan » thanh hoa, thanh san, tinh toan
cong thanh » dong thanh, cong trinh, cong tan
tieu sach » chieu sach, te sach, viet sach
dien sach » dien anh
dung cong » dung trong
anh tang » anh bang, anh dang, anh nang
tang duy » tang du, tang quy, tung duy
duy dung » duc dung, duy hung, duy tung
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((tieu sach) or (dien sach)) - anh tang duy dung cong thanh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((tieu sach) OR (dien sach)) - anh tang duy dung cong thanh toan ban.
• Adding a wildcard symbol may retrieve word variants: theo ((tieu sach) or (dien sach)) - anh tang duy dung cong thanh toan ban*.