Perhaps you should try some spelling variations:
thanh trung » thanh tung
hoc chieu » hoc thieu, ho chieu, hoc dieu
dang cong » dung cong
tam dang » nam dang, tam dan, tran dang
cong tac » cong ty
tac tuan » tac quan, ta tuan, tai tuan
tuan cau » toan cau, quan cau, tuan cu

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

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