Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
trung tuan » trung thanh, trung tam, tran tuan
nhung cong » thong cong, hang cong, nhung don
dung cong » dung trong
cac cau » cac mau, bac cau, cac cam
ca cau » cua cau, can cau, ca cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu sach - thanh trung tuan ((nhung cong) or (dung cong)) dan ((ca cau) or (cac cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - thanh trung tuan ((nhung cong) OR (dung cong)) dan ((ca cau) OR (cac cau)).
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - thanh trung tuan ((nhung cong) or (dung cong)) dan ((ca cau) or (cac cau))*.