Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
cua nhung » va nhung
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cao » toan ban, toan tap
bo cua » bao cua, co cua, do cua
o cua » co cua, do cua, ho cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((o cua) OR (bo cua)) tinh - ((nhanh quang) OR (canh tranh)) cua nhung cong tan toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((o cua) OR (bo cua)) tinh - ((nhanh quang) or (canh tranh)) cua nhung cong tan toan cao~".
• Adding a wildcard symbol may retrieve word variants: ((o cua) OR (bo cua)) tinh - ((nhanh quang) or (canh tranh)) cua nhung cong tan toan cao*.