Perhaps you should try some spelling variations:
thieu sach » chieu sach, hieu cach, theo sach
thien hach » thien thanh, hien hanh
minh trang » tinh trang, minh hoang, minh tuan
nhung cong » dung cong, thong cong, hang cong
cua nhung » va nhung
cong van » cong vang, cong san, song van
van toan » van tuan, van tan, van thanh
toan ban » van ban

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 sach) or (thien hach)) - ((minh trang) or (canh tranh)) cua nhung cong van toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sach) OR (thien hach)) - ((minh trang) OR (canh tranh)) cua nhung cong van toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sach) or (thien hach)) - ((minh trang) or (canh tranh)) cua nhung cong van toan ban*.