Perhaps you should try some spelling variations:
duong trong » dung trong
chieu sach » chinh sach, chiet tach, chieu sang
thanh tran » thanh trang, thanh toan, thanh tra
hanh trang » thanh trung, canh tranh, hanh trinh
tuan duong » tuyen duong, tuong duong, van duong
trong tac » trong cac, tuong tac, trong tan
ho chieu » theo chieu, hoc thieu, doi chieu
tac toan » tap toan, tam toan, hach toan
toan cau » 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 chieu sach - ((thanh tran) or (hanh trang)) tuan duong trong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - ((thanh tran) OR (hanh trang)) tuan duong trong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - ((thanh tran) or (hanh trang)) tuan duong trong tac toan cau*.