Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hach toan » thanh toan, manh toan
theo chu » theo chieu, cho chu, chao chu
chu tach » chu tich, chu thich, chu thanh
anh bang » anh hoang, anh quang, tinh bang
va thong » va thuong, va phuong, he thong
tac toan » tap toan, tam toan, tich toan
bang va » hang va, ban va, trang va

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chu tach - anh bang va thong cong ((tac toan) OR (hach toan)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chu tach - anh bang va thong cong ((tac toan) OR (hach toan)) cau".
• Adding a wildcard symbol may retrieve word variants: theo chu tach - anh bang va thong cong ((tac toan) OR (hach toan)) cau*.