Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hien hanh » dieu hanh
hanh tang » hanh trang, anh tang, hanh mang
cua nhung » va nhung
hien anh » thien anh, dien anh, tien anh
tang cua » mang cua, hang cua, tang luan
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than tap » toan tap, han tap, phan tap

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 anh) OR (hien hanh)) - hanh tang cua nhung cong dan than tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien anh) OR (hien hanh)) - hanh tang cua nhung cong dan than tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien anh) OR (hien hanh)) - hanh tang cua nhung cong dan than tap*.