Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
nhung cong » dung cong, thong cong, hang cong
lanh manh » lanh tranh, van manh, anh anh
cua nhung » va nhung
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan ban » van ban
lan anh » van anh, tuan anh

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu sach) or (chieu sang)) - ((lanh manh) or (lan anh)) cua nhung cong tac toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sach) OR (chieu sang)) - ((lanh manh) OR (lan anh)) cua nhung cong tac toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sach) or (chieu sang)) - ((lanh manh) or (lan anh)) cua nhung cong tac toan ban*.