Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh luan » khanh luan, hang luan, hanh luat
van nhung » van nhuong, va nhung, van hung
tay tieng » tap tieng, day tieng, toan tieng
ta tieng » tap tieng, tu tieng, va tieng
ho lieu » so lieu, ho kieu, ho chieu
co lieu » cot lieu, co hieu, so lieu

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) OR (co lieu)) tinh - hanh luan van nhung cong ((tay tieng) or (ta tieng)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho lieu) OR (co lieu)) tinh - hanh luan van nhung cong ((tay tieng) OR (ta tieng)) tap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho lieu) OR (co lieu)) tinh - hanh luan van nhung cong ((tay tieng) or (ta tieng)) tap*".