Perhaps you should try some spelling variations:
lang thang » cang thang, dang thanh, hung thang
doi chieu » doc hieu, doi chi, mot chieu
cong thuc » cong tac
thuc dung » thuoc dung, thuy dung, tuc dung
dung cong » dung trong
cong lang » cong vang, cong luong, cong quang
thang lap » thanh lap, thang lao, thong lap

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