Perhaps you should try some spelling variations:
thieu hach » thien hach, chieu sach, hieu cach
chiet tach » chieu sach
nhung cong » dung cong, thong cong, hang cong
canh manh » lanh manh, canh tranh, cach mang
cua nhung » va nhung
manh cua » doanh cua, ban cua
van tuan » van quan, van ban, anh tuan
ban than » ban thanh, van thanh, ban hang

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu hach) OR (chiet tach)) - canh manh cua nhung cong ((van tuan) OR (ban than)) cau~.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu hach) or (chiet tach)) - canh manh cua nhung cong ((van tuan) or (ban than)) cau*.