Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
tranh cua » doanh cua, manh cua
cua nhung » va nhung
hoc dieu » hoc thieu, hoc hien
cong tac » cong ty
doan cap » doanh cao, dan ca, doan va
toan cao » toan ban, toan tap

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc dieu hanh - canh tranh cua nhung cong tac ((doan cap) OR (toan cao))~".
• Adding a wildcard symbol may retrieve word variants: hoc dieu hanh - canh tranh cua nhung cong tac ((doan cap) OR (toan cao))*.