Perhaps you should try some spelling variations:
hanh dung » thanh dung, anh dung, hanh dong
luan cong » luat cong, luong cong, luan chung
duong dan » duong dang, huong dan, duong van
theo chu » theo chieu, cho chu, chao chu
chu sach » cau sach, thu sach, chieu sach
dong dan » dong danh, dong san, cong dan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chu sach - hanh dung luan cong ((dong dan) or (duong dan)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu sach - hanh dung luan cong ((dong dan) OR (duong dan)) toan cao.
• Adding a wildcard symbol may retrieve word variants: theo chu sach - hanh dung luan cong ((dong dan) or (duong dan)) toan cao*.