Perhaps you should try some spelling variations:
nguyen thanh » nguyen thi, nguyen van, nguyen xuan
chien thang » chien thuong, chien chong, hien trang
dung dang » dung dan, dung dong, dung danh
dang van » hoang van, hang va
van dieu » van hieu, va dieu, van diem
dieu tra » dieu tri, kiem tra, dieu cua
luan » quan, lan

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tin dung dang van dieu tra ) or ( tin dung luan van ((nguyen thanh) or (chien thang)) ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tin dung dang van dieu tra ) OR ( tin dung luan van ((nguyen thanh) OR (chien thang)) )).
• Adding a wildcard symbol may retrieve word variants: (( tin dung dang van dieu tra ) or ( tin dung luan van ((nguyen thanh) or (chien thang)) ))*.