Perhaps you should try some spelling variations:
thanh trung » thanh tung
hanh trinh » canh tranh, hanh chinh
thong cong » trong cong, tong cong, thong thong
cua thong » cua thuong, cua khong, cua tong
chu sach » thu sach, chieu sach, chuc hach
cau sach » cao sach, hau sach, rau sach
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cao » toan cao, thai cao, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: chao ((chu sach) OR (cau sach)) - ((thanh trung) or (hanh trinh)) cua thong cong dan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: chao ((chu sach) OR (cau sach)) - ((thanh trung) OR (hanh trinh)) cua thong cong dan than cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "chao ((chu sach) OR (cau sach)) - ((thanh trung) or (hanh trinh)) cua thong cong dan than cao".
• Adding a wildcard symbol may retrieve word variants: chao ((chu sach) OR (cau sach)) - ((thanh trung) or (hanh trinh)) cua thong cong dan than cao*.