Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu sach » chieu sach, thien hach, hieu cach
trung cua » truong cua, trung tuan, trung cap
bang cong » dang cong, bang song, hang cong
cua bang » chua bang, cua ban, cua dang
cong dan » cong san, cong tan, huong dan
than cau » toan cau, phan cau, than cap
toan cao » toan ban, toan tap
hieu ca » hieu cac, hieu cua, hieu va

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) or (hieu ca)) - thanh trung cua bang cong dan ((than cau) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sach) OR (hieu ca)) - thanh trung cua bang cong dan ((than cau) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sach) or (hieu ca)) - thanh trung cua bang cong dan ((than cau) or (toan cao))*.