Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
chieu xanh » chieu sang, chieu tinh, hieu manh
nhung cong » dung cong, thong cong, hang cong
trinh vat » trinh van, trinh luat, sinh vat
trinh va » trinh van, trinh ve, trinh vi
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh 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 sach) or (chieu xanh)) - hanh ((trinh va) OR (trinh vat)) nhung cong dan toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chieu xanh)) - hanh ((trinh va) OR (trinh vat)) nhung cong dan toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) or (chieu xanh)) - hanh ((trinh va) OR (trinh vat)) nhung cong dan toan tap".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (chieu xanh)) - hanh ((trinh va) OR (trinh vat)) nhung cong dan toan tap*.