Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
hanh tung » thanh tung, manh tung, hanh dung
dung cong » dung trong
anh tang » anh bang, anh dang, anh nang
cua dung » cua dang, cua dong, qua dung
cong tac » cong ty
tac ban » tai ban, cac ban, tao ban
ban cau » bang cau, ban can, van cau

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 sach) or (chieu sang)) - ((hanh tung) or (anh tang)) cua dung cong tac ban cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chieu sang)) - ((hanh tung) OR (anh tang)) cua dung cong tac ban cau.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (chieu sang)) - ((hanh tung) or (anh tang)) cua dung cong tac ban cau*.