Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhiet nang » nhiet dong, viet nang, nhieu tang
hanh trang » thanh trung, hanh trinh, minh trang
nhung cong » dung cong, thong cong, hang cong
cua nhung » va nhung
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cao » toan ban, toan tap

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 (nhiet nang)) - ((hanh trang) OR (canh tranh)) cua nhung cong tac toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (nhiet nang)) - ((hanh trang) OR (canh tranh)) cua nhung cong tac toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) or (nhiet nang)) - ((hanh trang) OR (canh tranh)) cua nhung cong tac toan cao".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (nhiet nang)) - ((hanh trang) OR (canh tranh)) cua nhung cong tac toan cao*.