Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
tien manh » tien anh, tien thanh, tieng anh
cua nhung » va nhung
hoc tien » hoc tieng, hoc hien, hoc vien
canh ban » can ban, canh dan, canh van
dan than » dan chan, ban than, van than
van chat » cao chat
ban cua » ban quan

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 tien manh - canh ban cua nhung cong ((((dan than) OR (xuan toan))) OR (van chat)) cau~.
• Adding a wildcard symbol may retrieve word variants: hoc tien manh - canh ban cua nhung cong ((((dan than) or (xuan toan))) or (van chat)) cau*.