Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
thi chieu » thi chien, theo chieu, thi hien
cua nhung » va nhung
ho chieu » theo chieu, hoc thieu, doi chieu
thi hieu » thi hien, thi dieu, chi hieu
canh ban » can ban, canh dan, canh van
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cao » toan ban, toan tap
ban cua » ban quan

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