Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, mot chieu
phan dat » phan dau, phan dai, phan day
dat dung » dan dung, vat dung, da dung
dung ung » dung cong
ung thuc » ung thuoc, ung thu, dung thuoc
thuc van » thuc vat, thuc dan, thuc va
van than » van thanh, van thang, van tuan
than cap » khan cap, thanh lap, thanh 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 dat dung ung thuc van than cap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) OR (toc thieu)) sach - phan dat dung ung thuc van than cap".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) OR (toc thieu)) sach - phan dat dung ung thuc van than cap*.