Perhaps you should try some spelling variations:
thanh cham » thanh pham, hanh cham, thanh cha
thai viet » thi viet, tai viet, mai viet
viet tech » viet sach
nhan dang » nhan dan, phan dang, tran dang
cong dang » cong dong, cong dung, cong danh
dang chu » dang nhu, dang cu, dang thu
chu dang » chu bang, chu dong, thu dang
cong dan » cong san, cong tan, huong dan

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

• Performing a fuzzy search may retrieve terms with similar spellings: thai viet tech - nhan dang chu dang ((cong dan) or (cong dang)) thanh cham~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thai viet tech - nhan dang chu dang ((cong dan) OR (cong dang)) thanh cham*.