Perhaps you should try some spelling variations:
thanh trung » thanh tung
hien hanh » dieu hanh
hien anh » thien anh, dien anh, tien anh
van dung » van dong, xay dung
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
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)) - thanh trung ((van dung) or (tin dung)) cong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien anh) OR (hien hanh)) - thanh trung ((van dung) OR (tin dung)) cong dan toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien anh) or (hien hanh)) - thanh trung ((van dung) or (tin dung)) cong dan toan cau*.