Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
chieu xanh » chieu sang, chieu tinh, hieu manh
hanh trinh » hanh chinh
nhung cong » dung cong, thong cong, hang cong
trinh toan » tinh toan, thanh toan, trinh han
cua nhung » va nhung
toan ban » van ban

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 sach) or (chieu xanh)) - ((hanh trinh) or (canh tranh)) cua nhung cong trinh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sach) OR (chieu xanh)) - ((hanh trinh) OR (canh tranh)) cua nhung cong trinh toan ban.
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sach) or (chieu xanh)) - ((hanh trinh) or (canh tranh)) cua nhung cong trinh toan ban*.