Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
theo hien » theo chieu, thuc hien, theo tieu
hien hanh » dieu hanh
trang cua » tranh cua, tang cua, trung cua
hang cua » mang cua, hang ca, huong cua
cong san » cong tac
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo hien hanh - hanh ((trang cua) or (hang cua)) nhung cong san ((toan tap) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo hien hanh - hanh ((trang cua) OR (hang cua)) nhung cong san ((toan tap) OR (toan ban))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo hien hanh - hanh ((trang cua) or (hang cua)) nhung cong san ((toan tap) OR (toan ban))*".