Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
hanh trong » hanh trang, anh trong, hinh trong
trong tuan » trong quan, trung tuan, trong tan
dong thanh » truong thanh
hoc thieu » toc thieu, hoc hien
tuan hung » tran hung, luan hung, tuan dung
cong san » cong tac
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: hoc thieu sach - hanh trong tuan hung ((cong san) or (dong thanh)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - hanh trong tuan hung ((cong san) OR (dong thanh)) toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - hanh trong tuan hung ((cong san) or (dong thanh)) toan cao*.