Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
quang cong » quang cuong, quang dong, quang hoang
hanh dang » hanh dong, anh dang, hanh dung
dang tran » dang thanh, quang tran, hoang tran
cong bang » cuong bang, dong bang, hong bang
trong thi » trong thoi, trong thu, trong tho
trong co » trong ca, trong cong, trong cuoc

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 - hanh dang tran quang cong bang ((trong co) or (trong thi))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - hanh dang tran quang cong bang ((trong co) OR (trong thi)).
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - hanh dang tran quang cong bang ((trong co) or (trong thi))*.