Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
phan thanh » pham thanh, ban thanh, van thanh
hoc thieu » toc thieu, hoc hien
van thang » van thanh, van khang, van hang
thang cap » thong cap, than cap, trung cap
cong van » cong vang, cong san, song van

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu sach - phan thanh ((tin dung) or (trinh dung)) cong van thang cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - phan thanh ((tin dung) OR (trinh dung)) cong van thang cap.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - phan thanh ((tin dung) or (trinh dung)) cong van thang cap*.