Perhaps you should try some spelling variations:
thanh trung » thanh tung
trung tuan » trung thanh, trung tam, tran tuan
nhung cong » dung cong, thong cong, nhung don
tieu sach » chieu sach, dien sach, te sach
hang cong » dang cong, hang nong, bang cong
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu sach - thanh trung tuan ((nhung cong) or (hang cong)) sang ((toan cau) OR (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sach - thanh trung tuan ((nhung cong) OR (hang cong)) sang ((toan cau) OR (toan tap))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu sach - thanh trung tuan ((nhung cong) or (hang cong)) sang ((toan cau) OR (toan tap))*".