Perhaps you should try some spelling variations:
luan trong » quan trong, luat trong, luan tuong
hien hanh » dieu hanh
hanh mang » nhanh mang, hanh trang, nhanh lang
mang luan » tang luan, hang luan, bang luan
cong dan » cong san, cong tan, huong dan
nhan tai » hang tai, van tai, toan tai
toan tap » toan ban

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 mang luan trong cong dan ((nhan tai) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien hanh - hanh mang luan trong cong dan ((nhan tai) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: hoc hien hanh - hanh mang luan trong cong dan ((nhan tai) or (toan tap))*.