Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
canh soanh » canh tranh, hanh doanh, oanh oanh
cua phuong » cuu phuong, cuc phuong, luan phuong
soanh cua » doanh cua, manh cua, tranh cua
hoc dieu » hoc thieu, hoc hien
cong tan » cong tac, cong san, cong thanh
chan dau » han dau, chuan dao, chan dang
phan dau » phan tu, hang dau
doan » doanh, dan, toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc dieu hanh - canh soanh cua phuong cong tan ((((chan dau) OR (phan dau))) or (chan doan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc dieu hanh - canh soanh cua phuong cong tan ((((chan dau) OR (phan dau))) OR (chan doan)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc dieu hanh - canh soanh cua phuong cong tan ((((chan dau) OR (phan dau))) or (chan doan))".
• Adding a wildcard symbol may retrieve word variants: hoc dieu hanh - canh soanh cua phuong cong tan ((((chan dau) OR (phan dau))) or (chan doan))*.