Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
ngan tong » nhan tong, nganh cong, nganh nong
tong dan » tuong dan, thong dan, trong dan
dan toan » van toan, dan than, manh toan
toan ban » van ban
tang vu » tang su, tang tu, trang va
tang du » nang du, hang dau, dang duc

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 (chiet tach)) - hanh ((tang vu) OR (tang du)) ngan tong dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chiet tach)) - hanh ((tang vu) OR (tang du)) ngan tong dan toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) or (chiet tach)) - hanh ((tang vu) OR (tang du)) ngan tong dan toan ban".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (chiet tach)) - hanh ((tang vu) OR (tang du)) ngan tong dan toan ban*.