Perhaps you should try some spelling variations:
luan nhung » luan chung, luan hung, quan nhung
nhung cong » dung cong, thong cong, hang cong
hien tinh » khien tinh, thien tinh, bien tinh
hanh tang » hanh trang, anh tang, hanh mang
tang luan » dung luan
cong san » cong tac
tran ban » tranh ban, toan ban, tran bai
tran 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: hoc hien tinh - hanh tang luan nhung cong san ((tran ban) OR (tran van))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien tinh - hanh tang luan nhung cong san ((tran ban) OR (tran van))".
• Adding a wildcard symbol may retrieve word variants: hoc hien tinh - hanh tang luan nhung cong san ((tran ban) OR (tran van))*.