Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hien manh » tien manh, hieu manh, hien nhanh
hien hanh » dieu hanh
hang luan » tang luan, dung luan
cong san » cong tac
toan cao » toan ban, toan tap
luan va » luan van, luat va

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 manh) or (hien hanh)) - hang luan va nhung cong san ((toan cao) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien manh) OR (hien hanh)) - hang luan va nhung cong san ((toan cao) OR (van ban)).
• Adding a wildcard symbol may retrieve word variants: hoc ((hien manh) or (hien hanh)) - hang luan va nhung cong san ((toan cao) or (van ban))*.