Perhaps you should try some spelling variations:
trinh luan » trinh luat, trinh quan, trinh han
chiet tach » chieu sach
dang cong » dung cong
tinh cua » trinh cua, sinh cua, tinh chat
cong dan » cong san, cong tan, huong dan
dan canh » van canh, dan cach, dan hanh
canh cau » canh chau, can cau, danh cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chinh sach) or (chiet tach)) - hanh ((tinh cua) or (trinh luan)) dang cong dan canh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chinh sach) OR (chiet tach)) - hanh ((tinh cua) OR (trinh luan)) dang cong dan canh cau.
• Adding a wildcard symbol may retrieve word variants: ho ((chinh sach) or (chiet tach)) - hanh ((tinh cua) or (trinh luan)) dang cong dan canh cau*.