Perhaps you should try some spelling variations:
chiet tach » chieu sach
thanh tung » thanh cong
trong tan » trong quan, trong cac, trong ca
ho chiet » ho chieu, ho thiet, hoc thiet
qua dung » quang dung, su dung, qua song
tan toan » tan tran, tap toan, van 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 chiet tach - ((thanh trung) or (thanh tung)) qua dung trong tan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - ((thanh trung) OR (thanh tung)) qua dung trong tan toan cao.
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - ((thanh trung) or (thanh tung)) qua dung trong tan toan cao*.