Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
nhung cong » dung cong, hang cong, nhung don
banh tran » banh trang, ban tran, canh tranh
30 trieu » 25 trieu
tran van » luan van
phan cau » phan dau, phan tu, phan lap
phan cac » nhan cach, phan dau, phan lap

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

• Performing a fuzzy search may retrieve terms with similar spellings: 30 trieu tinh - banh tran van ((nhung cong) or (thong cong)) dan ((phan cau) or (phan cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: 30 trieu tinh - banh tran van ((nhung cong) OR (thong cong)) dan ((phan cau) OR (phan cac)).
• Adding a wildcard symbol may retrieve word variants: 30 trieu tinh - banh tran van ((nhung cong) or (thong cong)) dan ((phan cau) or (phan cac))*.