Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
chan dung » van dung, dan dung
trong tan » trong quan, trong cac, trong ca
can dung » van dung, dan dung, can xung
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: theo chieu sach - thanh trung ((can dung) OR (chan dung)) trong tan toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - thanh trung ((can dung) OR (chan dung)) trong tan toan cao".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - thanh trung ((can dung) OR (chan dung)) trong tan toan cao*.