Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhung cong » dung cong, thong cong, hang cong
hien sach » dien sach, thien hach, chieu sach
kien sach » dien sach, vien bach, kien mac
trung thi » truong thi, trong thi, trung tri
thi nhung » thi nang, thi hong, thi huong
cong lang » cong vang, cong luong, cong quang
lang phan » nang phan, lang thang, lang phong

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hien sach) or (kien sach)) - thanh trung thi nhung cong lang phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien sach) OR (kien sach)) - thanh trung thi nhung cong lang phan tu.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien sach) or (kien sach)) - thanh trung thi nhung cong lang phan tu*.