Perhaps you should try some spelling variations:
thanh trung » thanh tung
trung tham » trung tam, trung thanh, trung thang
tham nhung » thi nhung
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
doc hieu » toc thieu, hoc hien
cong dan » cong san, cong tan, huong dan
phan cau » phan dau, phan cac, phan tu
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thieu) or (doc hieu)) sach - thanh trung tham nhung cong dan ((phan cau) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (doc hieu)) sach - thanh trung tham nhung cong dan ((phan cau) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (doc hieu)) sach - thanh trung tham nhung cong dan ((phan cau) or (toan cao))*.