Perhaps you should try some spelling variations:
thanh trung » thanh tung
chiet tach » chieu sach
trung cua » truong cua, trung tuan, trung cap
dung cong » dung trong
ho chiet » ho chieu, ho thiet, hoc thiet
cua dung » cua dang, cua dong, qua dung
dan than » ban than, van than, dan toan
dan chan » dan gian, dan ca, van chat

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 - thanh trung cua dung cong ((tinh toan) or (((dan than) or (dan chan)))) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - thanh trung cua dung cong ((tinh toan) OR (((dan than) OR (dan chan)))) cau.
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - thanh trung cua dung cong ((tinh toan) or (((dan than) or (dan chan)))) cau*.