Perhaps you should try some spelling variations:
lang thanh » dang thanh, tang thanh, lang thang
doi chieu » doc hieu, doi chi, mot chieu
hoc thieu » toc thieu, hoc hien
cong thuc » cong tac
thuc hung » thuc chung, thuc nhung, thuc dung
hung cong » nhung cong, hung cuong, phung cong
cong lang » cong vang, cong luong, cong quang
thanh dat » thanh san, thanh hai, thanh van

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