Perhaps you should try some spelling variations:
hien hanh » dieu hanh
canh manh » lanh manh, canh tranh, cach mang
cua nhung » va nhung
hien anh » thien anh, dien anh, tien anh
manh cua » doanh cua, ban cua
cong tan » cong tac, cong san, cong thanh
toan cau » toan cao, toan ban, toan 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)) - canh manh cua nhung ((cong tan) or (huong dan)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien anh) OR (hien hanh)) - canh manh cua nhung ((cong tan) OR (huong dan)) toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien anh) or (hien hanh)) - canh manh cua nhung ((cong tan) or (huong dan)) toan cau*.