Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, mot chieu
cong chuc » cong thuc, cong cu, cong cua
chuc dang » chuc nang, chuc danh, thuoc dang
dang cong » dung cong
cong cong » cong dong, trong cong, dung cong
cong han » cong hoan, cong nhan, cong khan
han tu » phan tu, hanh tu, ban tu

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