Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hieu manh » chieu xanh, hieu nganh, dieu hanh
cua thong » cua thuong, cua khong, suat thong
anh nang » ganh nang, anh bang, anh dang
cua tong » cua cong, cua dong, cua nong
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
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: theo ((chieu sach) or (hieu manh)) - anh nang ((cua thong) OR (cua tong)) cong dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (hieu manh)) - anh nang ((cua thong) OR (cua tong)) cong dan toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) or (hieu manh)) - anh nang ((cua thong) OR (cua tong)) cong dan toan ban".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (hieu manh)) - anh nang ((cua thong) OR (cua tong)) cong dan toan ban*.