Perhaps you should try some spelling variations:
chiet tach » chieu sach
canh trinh » canh tranh, hanh trinh, canh tinh
vuong tin » luong tin, vuong tan, duong tien
ho chiet » ho chieu, ho thiet, hoc thiet
toan cau » toan ban, toan tap, toan tai
toan cao » toan ban, toan tap
va hung » van hung, 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 chiet tach - canh trinh ((va hung) OR (va nhung)) vuong tin ((toan cau) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - canh trinh ((va hung) OR (va nhung)) vuong tin ((toan cau) OR (toan cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chiet tach - canh trinh ((va hung) OR (va nhung)) vuong tin ((toan cau) or (toan cao))".
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - canh trinh ((va hung) OR (va nhung)) vuong tin ((toan cau) or (toan cao))*.