Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chiet tach, chieu sang, chieu xanh
cong duong » cuong duong, cong dong, con duong
trung cao » truong cao, trung cap, trung co
duong van » duong va, luong va, dang van
ban thanh » ban hanh, ban hang
cao cong » cac cong, cao dang, cua cong

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sach) or (chinh sach)) - thanh trung cao cong duong van ban thanh~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chinh sach)) - thanh trung cao cong duong van ban thanh.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (chinh sach)) - thanh trung cao cong duong van ban thanh*.