Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, truong thanh
tranh hang » trinh han, tran hoang, tran hong
lieu tinh » trieu tinh, diep tinh, bien tinh
nhan dang » nhan dan, phan dang, tran dang
dang luan » dung luan, tang luan, hang luan
luan ban » luan van, luan san, luan han
cong tan » cong tac, cong san, cong ty
tran ban » tranh ban, tran van, toan ban
ho lieu » so lieu, co lieu, ho kieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho lieu tinh - nhan dang luan ban ((cong thanh) OR (cong tan)) ((tran ban) or (tranh hang))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho lieu tinh - nhan dang luan ban ((cong thanh) OR (cong tan)) ((tran ban) OR (tranh hang))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho lieu tinh - nhan dang luan ban ((cong thanh) OR (cong tan)) ((tran ban) or (tranh hang))*".