Perhaps you should try some spelling variations:
nhan hang » ngan hang, nhan dang, nha hang
hang khoa » dung khoa
luan ket » lien ket
qua tieu » luan tieu
tieu thu » trieu thi, tieu su
thu minh » thi minh, chi minh, vu minh
doan han » doan phan, doan hai, doan hay
doan van » doan va, hoang van, luan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: nhan hang khoa luan ket qua tieu thu minh ((doan han) OR (doan van)) hien~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "nhan hang khoa luan ket qua tieu thu minh ((doan han) OR (doan van)) hien*".