Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chieu xanh, hieu cach
hanh tranh » canh tranh, hanh trinh, hanh trang
nhung cong » dung cong, thong cong, hang cong
tranh cua » doanh cua, manh cua
cua nhung » va nhung
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan tap » toan ban

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 sang) or (((chieu sach) or (chiet tach)))) - hanh tranh cua nhung cong tac toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (((chieu sach) OR (chiet tach)))) - hanh tranh cua nhung cong tac toan tap.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (((chieu sach) or (chiet tach)))) - hanh tranh cua nhung cong tac toan tap*.