Perhaps you should try some spelling variations:
doi trieu » dong trieu, doi trinh, hoi tieu
doi chieu » doc hieu, doi chi, ho chieu
dung cong » dung trong
cong tuan » cong tan, cong luan, cong thanh
cong qua » cong cua, song qua, cong quy
qua dung » quang dung, su dung, qua song
tuan van » luan van, tran van, tan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi trieu) OR (doi chieu)) tinh - thanh cong qua dung cong tuan van ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi trieu) OR (doi chieu)) tinh - thanh cong qua dung cong tuan van ban".
• Adding a wildcard symbol may retrieve word variants: ((doi trieu) OR (doi chieu)) tinh - thanh cong qua dung cong tuan van ban*.