Perhaps you should try some spelling variations:
thinh luan » trinh luan, chinh luan, trinh luat
thong cong » trong cong, tong cong, thong thong
hoc chieu » hoc thieu, ho chieu, hoc hien
van thong » van thuong, van phong, va thong
cong dat » cong dan, dong dat, cong da
dat phan » data phan, dam phan, sat phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc chieu) or (toc thieu)) sang - thinh luan van thong cong dat phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chieu) OR (toc thieu)) sang - thinh luan van thong cong dat phan tu.
• Adding a wildcard symbol may retrieve word variants: ((hoc chieu) or (toc thieu)) sang - thinh luan van thong cong dat phan tu*.