Perhaps you should try some spelling variations:
cong trong » cong thuong, duong trong, cong trinh
hanh tranh » canh tranh, hanh trinh, hanh trang
hien hanh » dieu hanh
tranh cua » doanh cua, manh cua
cong nong » cong dong, cong cong, cong luong
san toan » van toan, dan toan, manh toan
toan tap » toan ban

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 hanh - hanh tranh cua ((cong nong) or (cong trong)) san toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien hanh - hanh tranh cua ((cong nong) OR (cong trong)) san toan tap.
• Adding a wildcard symbol may retrieve word variants: hoc hien hanh - hanh tranh cua ((cong nong) or (cong trong)) san toan tap*.