Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trong thap » trong thai, trong phap, trong thuat
tranh cua » doanh cua, manh cua
trong tap » tong tap, trong tan, trong tai
cua dung » cua dang, cua dong, qua dung
toan cau » toan cao, toan ban, toan tap
co sach » bo sach, cuon sach, hoc sach

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((co sach) or (chieu sach)) - canh tranh cua dung ((trong tap) or (trong thap)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((co sach) OR (chieu sach)) - canh tranh cua dung ((trong tap) OR (trong thap)) toan cau.
• Adding a wildcard symbol may retrieve word variants: doi ((co sach) or (chieu sach)) - canh tranh cua dung ((trong tap) or (trong thap)) toan cau*.