Perhaps you should try some spelling variations:
thanh luan » tranh luan, thanh xuan, thanh tuan
thong cong » trong cong, tong cong, thong thong
chong cong » cong cong, cuong cong, phong cong
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap
ha tinh » va tinh, may tinh
o ha » y ha, _ ha

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

• Performing a fuzzy search may retrieve terms with similar spellings: o ha tinh - thanh luan van ((thong cong) or (chong cong)) dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: o ha tinh - thanh luan van ((thong cong) OR (chong cong)) dan than cau.
• Adding a wildcard symbol may retrieve word variants: o ha tinh - thanh luan van ((thong cong) or (chong cong)) dan than cau*.