Perhaps you should try some spelling variations:
thuc thach » thuc thanh, thuoc thanh, thuc hanh
thach phan » thanh phan, thanh pham, mach phan
doi chieu » doc hieu, doi chi, mot chieu
dung cong » dung trong
cong thuc » cong tac
phan dan » phan dang, phan dau, nhan dan
dan dung » van dung, tin dung, ap dung
phan cap » phan lap, phan tap, phan cac

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 dan dung cong thuc thach phan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (toc thieu)) sach - phan dan dung cong thuc thach phan cap*.