Perhaps you should try some spelling variations:
lang thang » cang thang, dang thanh, hung thang
hoc thieu » toc thieu, hoc hien
cong chuc » cong thuc, cong cu, cong cua
chuc dung » thuc dung, thuoc dung, chuc nang
dung cong » dung trong
cong lang » cong vang, cong luong, cong quang
ho chieu » theo chieu, mot chieu, doi chieu
thang tu » thong tu, thanh tu, hang tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (hoc thieu)) sach - thanh cong chuc dung cong lang thang tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) sach - thanh cong chuc dung cong lang thang tu.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc thieu)) sach - thanh cong chuc dung cong lang thang tu*.