Perhaps you should try some spelling variations:
hoc thiet » hoc thieu, hoc thuyet, hoc hien
tranh cua » doanh cua, manh cua
ho thiet » hoa thiet, so thiet, hoc thieu
dan cong » dang cong, van cong, dan dong
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan ban » van ban
cua dan » cua dang, cua ban, ca dan

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 thiet) OR (hoc thiet)) tach - canh tranh cua dan cong tan toan ban~.
• Adding a wildcard symbol may retrieve word variants: ((ho thiet) or (hoc thiet)) tach - canh tranh cua dan cong tan toan ban*.