Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
ho chieu » theo chieu, hoc thieu, doi chieu
theo chu » theo chieu, cho chu, chao chu
hang cua » hang ca, huong cua, thong cua
mang cua » manh cua, dung cua, ban cua
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan ban » van ban

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: ((ho chieu) OR (theo chu)) xanh - hanh ((hang cua) OR (mang cua)) nhung cong tac toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (theo chu)) xanh - hanh ((hang cua) OR (mang cua)) nhung cong tac toan ban~".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (theo chu)) xanh - hanh ((hang cua) OR (mang cua)) nhung cong tac toan ban*.