Perhaps you should try some spelling variations:
thang thuc » trang thuc, thuong thuc, khang thuoc
doi chieu » doc hieu, doi chi, mot chieu
phan lang » phan dang, phan lan, phan cang
van thang » van thanh, van khang, van hang
lang van » dang van, tang van, hoang van
thuc dan » thuc hanh, hoc dan, thuc vat
dan phan » doan phan, dan chan, van phan

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 lang van thang thuc dan phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (toc thieu)) sach - phan lang van thang thuc dan phan tu.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (toc thieu)) sach - phan lang van thang thuc dan phan tu*.