Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
thiet tach » chiet tach, thien hach, thuat tach
nhung hong » nhung chong, nhung huong, nhung phong
hoc thiet » hoc thieu, hoc thuyet, hoc hien
tang luan » dung luan
van thanh » ban thanh, van tuan
thanh tai » thanh hai, thanh toan, doanh tai
anh tang » anh bang, anh dang, anh nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thiet tach - anh tang luan ((nhung hong) or (nhung phuong)) van thanh tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet tach - anh tang luan ((nhung hong) OR (nhung phuong)) van thanh tai.
• Adding a wildcard symbol may retrieve word variants: hoc thiet tach - anh tang luan ((nhung hong) or (nhung phuong)) van thanh tai*.