Perhaps you should try some spelling variations:
nhung bang » nhung lang, nhung bong, phuong bang
nhung cang » nhung cong, nhung lang, nhung chong
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
ho thiet » hoc thiet, hoa thiet, hoc thieu
so thiet » soc thiet, hoc thiet, hoa thiet
van luan » van quan, van tuan, von luan
luan ban » luan van, luan san, luan han
tinh va » tich va, trinh van, trinh vat

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho thiet) or (so thiet)) tach - hanh tinh va ((nhung bang) OR (nhung cang)) van luan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho thiet) OR (so thiet)) tach - hanh tinh va ((nhung bang) OR (nhung cang)) van luan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho thiet) or (so thiet)) tach - hanh tinh va ((nhung bang) OR (nhung cang)) van luan ban".
• Adding a wildcard symbol may retrieve word variants: ((ho thiet) or (so thiet)) tach - hanh tinh va ((nhung bang) OR (nhung cang)) van luan ban*.