Perhaps you should try some spelling variations:
nhung tuong » nhung phuong, hung vuong, nhung cong
nhung huong » nhung phuong, nhung cong, nhung dung
hien hanh » dieu hanh
hanh tang » hanh trang, anh tang, hanh mang
tang luan » dung luan
tuan tap » toan tap, tuyen tap, toan tai
tuan tai » toan tai, quan tai, tan tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien hanh - hanh tang luan ((nhung huong) or (nhung tuong)) van ((tuan tap) OR (tuan tai))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien hanh - hanh tang luan ((nhung huong) OR (nhung tuong)) van ((tuan tap) OR (tuan tai)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien hanh - hanh tang luan ((nhung huong) or (nhung tuong)) van ((tuan tap) OR (tuan tai))".
• Adding a wildcard symbol may retrieve word variants: hoc hien hanh - hanh tang luan ((nhung huong) or (nhung tuong)) van ((tuan tap) OR (tuan tai))*.