Perhaps you should try some spelling variations:
tieng trung » truong trung
doi chieu » doc hieu, doi chi, mot chieu
phan dang » phan dau, phan cong, nhan dan
trung van » truong van, trong van, trung va
va tieng » va tinh, tu tieng, va thong
van phan » van phong, van thanh, luan phan
dang va » dang van, dang vat, hang va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) or (toc thieu)) sach - phan dang va tieng trung van phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (toc thieu)) sach - phan dang va tieng trung van phan tu.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (toc thieu)) sach - phan dang va tieng trung van phan tu*.