Perhaps you should try some spelling variations:
chiet tach » chieu sach
hanh trang » thanh trung, canh tranh, hanh trinh
trang tuan » tran tuan, trung tuan, trong tuan
hoc chiet » hoc thiet, hoc nhiet, hoc hien
tuan hung » tran hung, luan hung, tuan dung
hung cong » nhung cong, hung cuong, phung cong
cong dan » cong san, cong tan, huong dan
toan cau » toan cao, toan tap, toan tai
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: hoc chiet tach - hanh trang tuan hung cong dan ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chiet tach - hanh trang tuan hung cong dan ((toan cau) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc chiet tach - hanh trang tuan hung cong dan ((toan cau) or (toan ban))*.