Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trang » thanh trung, canh tranh, hanh trinh
nhung cong » dung cong, thong cong, hang cong
hanh tung » thanh tung, manh tung, thanh trung
hanh dung » thanh dung, anh dung, hanh dong
cua nhung » va nhung
ho chieu » theo chieu, hoc thieu, doi chieu
cong tap » cuong tap, cong tac, cong tan
tap toan » tap doan, tap quan, bai 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 chieu sach - ((((hanh tung) or (hanh dung))) or (hanh trang)) cua nhung cong tap toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - ((((hanh tung) OR (hanh dung))) OR (hanh trang)) cua nhung cong tap toan cao.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - ((((hanh tung) or (hanh dung))) or (hanh trang)) cua nhung cong tap toan cao*.