Perhaps you should try some spelling variations:
nhanh thanh » nhanh tinh
thiet tach » chiet tach, thien hach, thuat tach
phan thanh » pham thanh, ban thanh, van thanh
thong cong » trong cong, tong cong, thong thong
ho thiet » hoc thiet, hoa thiet, so thiet
va thong » va thuong, va phuong, he thong
cong tan » cong tac, cong san, cong thanh
toan cau » toan ban, toan tap, toan tai
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 - ((nhanh thanh) or (phan thanh)) va thong cong tan ((toan cau) OR (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho thiet tach - ((nhanh thanh) OR (phan thanh)) va thong cong tan ((toan cau) OR (toan cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho thiet tach - ((nhanh thanh) or (phan thanh)) va thong cong tan ((toan cau) OR (toan cao))".
• Adding a wildcard symbol may retrieve word variants: ho thiet tach - ((nhanh thanh) or (phan thanh)) va thong cong tan ((toan cau) OR (toan cao))*.