Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung don
hoc chieu » hoc thieu, hoc hien, hoc dieu
canh manh » lanh manh, canh tranh, cach mang
dung cong » dung trong
manh toan » thanh toan, anh tuan, tinh toan
ho chieu » theo chieu, hoc thieu, doi chieu
manh cua » doanh cua, ban cua
toan cao » toan ban, toan tap

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: ((hoc chieu) OR (ho chieu)) tinh - canh manh cua ((nhung cong) OR (dung cong)) manh toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chieu) OR (ho chieu)) tinh - canh manh cua ((nhung cong) or (dung cong)) manh toan cao~".
• Adding a wildcard symbol may retrieve word variants: ((hoc chieu) OR (ho chieu)) tinh - canh manh cua ((nhung cong) or (dung cong)) manh toan cao*.