Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
thanh tung » thanh cong
dung cong » dung trong
tung cua » trung cua, tuong cua, dung cua
cua dung » cua dang, cua dong, qua dung
cong tap » cuong tap, cong tac, cong tan
toan tai » doanh tai, toan ban, toan cao
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: theo ((chieu sach) or (chiet tach)) - thanh tung cua dung cong tap ((toan tai) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chiet tach)) - thanh tung cua dung cong tap ((toan tai) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (chiet tach)) - thanh tung cua dung cong tap ((toan tai) or (toan tap))*.