Perhaps you should try some spelling variations:
thong luan » thong quan, tong luan, thong xuan
anh thong » anh thuong, anh trong, anh huong
cong than » cong thanh, cong thang, cong tan
than phan » thanh phan, toan phan, thanh pham
doc hieu » hoc thieu, hoc hien
van cong » van dong, van phong, phan cong
phan lap » phan dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) OR (toc thieu)) sang - anh thong luan van cong than phan lap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc hieu) OR (toc thieu)) sang - anh thong luan van cong than phan lap".
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) OR (toc thieu)) sang - anh thong luan van cong than phan lap*.