Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
manh trung » manh tung, thanh trung, manh hung
dien sach » dien anh
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
doc dien » duoc dien, doi dien, do dien
cong dan » cong san, cong tan, huong dan
than cao » thai cao, than cap, than vao
than sao » than so, than vao, thanh san
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: doc dien sach - manh trung cua nhung cong dan ((((than cao) or (than sao))) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc dien sach - manh trung cua nhung cong dan ((((than cao) OR (than sao))) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: doc dien sach - manh trung cua nhung cong dan ((((than cao) or (than sao))) or (toan cao))*.