Perhaps you should try some spelling variations:
hanh trung » thanh trung, hanh trang, manh trung
nhung cong » dung cong, thong cong, hang cong
hien sach » dien sach, kien sach, thien hach
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
cong dan » cong san, cong tan, huong 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: hoc hien sach - hanh trung cua nhung cong dan ((toan cao) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien sach - hanh trung cua nhung cong dan ((toan cao) OR (van ban)).
• Adding a wildcard symbol may retrieve word variants: hoc hien sach - hanh trung cua nhung cong dan ((toan cao) or (van ban))*.