Perhaps you should try some spelling variations:
thiet tach » chiet tach, thien hach, thuat tach
nhung cong » dung cong, thong cong, hang cong
trang cua » tranh cua, tang cua, trong cua
thang cua » thong cua, hang cua, than cua
trung cua » truong cua, trung tuan, trung cap
ho thiet » hoc thiet, hoa thiet, so thiet
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho thiet tach - hanh ((((trang cua) or (thang cua))) or (trung cua)) nhung cong tac toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho thiet tach - hanh ((((trang cua) OR (thang cua))) OR (trung cua)) nhung cong tac toan cao.
• Adding a wildcard symbol may retrieve word variants: ho thiet tach - hanh ((((trang cua) or (thang cua))) or (trung cua)) nhung cong tac toan cao*.