Perhaps you should try some spelling variations:
hanh thong » anh thong, hang thong, hinh thong
hanh trong » hanh trang, anh trong, hinh trong
tieu sach » chieu sach, dien sach, te sach
dung cong » dung trong
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan ban » van ban
va dung » van dung, va duong, vat dung

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 - ((hanh thong) or (hanh trong)) va dung cong tan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sach - ((hanh thong) OR (hanh trong)) va dung cong tan toan ban.
• Adding a wildcard symbol may retrieve word variants: theo tieu sach - ((hanh thong) or (hanh trong)) va dung cong tan toan ban*.