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
dung cong » dung trong
hang cong » dang cong, hang nong, bang cong
tan than » tan thanh, tan tran, ban than
than cau » toan cau, phan cau, 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: theo chieu sach - thanh trung tuan ((dung cong) or (hang cong)) tan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - thanh trung tuan ((dung cong) OR (hang cong)) tan than cau.
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - thanh trung tuan ((dung cong) or (hang cong)) tan than cau*.