Perhaps you should try some spelling variations:
chiet tach » chieu sach
dung cong » dung trong
ban thanh » ban hanh, ban hang
ho chiet » ho chieu, ho thiet, hoc thiet
tac dung » sach dung, xay dung, tin dung
dung qua » duong qua, dung quan, dung cua
qua dung » quang dung, su dung, qua song
tan toan » tan tran, tap toan, van toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chiet tach - tac dung qua dung cong ((tan toan) or (((tinh toan) or (ban thanh)))) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - tac dung qua dung cong ((tan toan) OR (((tinh toan) OR (ban thanh)))) cau.
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - tac dung qua dung cong ((tan toan) or (((tinh toan) or (ban thanh)))) cau*.