Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
canh trinh » canh tranh, hanh trinh, canh tinh
vuong tin » luong tin, vuong tan, duong tien
ho chieu » theo chieu, hoc thieu, doi chieu
van hung » van dung, manh hung, van duong
tin toan » tinh toan, nin toan, trinh toan
toan cau » toan cao, toan ban, toan tap
va hung » va nhung, va huong, va ung

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 - canh trinh ((va hung) OR (van hung)) vuong tin toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - canh trinh ((va hung) OR (van hung)) vuong tin toan cau".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - canh trinh ((va hung) OR (van hung)) vuong tin toan cau*.