Perhaps you should try some spelling variations:
chiet tach » chieu sach
canh trinh » canh tranh, hanh trinh, anh trinh
hung luong » hung vuong, dung luong, hang luong
trinh toan » tinh toan, thanh toan, trinh han
canh tinh » hanh tinh, manh tinh, canh tranh
ho chiet » ho chieu, ho thiet, hoc thiet
tin toan » tinh toan, nin toan, thien toan
va hung » va nhung, van hung, va huong

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) or (canh tinh)) va hung luong ((tin toan) OR (trinh toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - ((canh trinh) OR (canh tinh)) va hung luong ((tin toan) OR (trinh toan)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chiet tach - ((canh trinh) or (canh tinh)) va hung luong ((tin toan) OR (trinh toan)) cao".
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - ((canh trinh) or (canh tinh)) va hung luong ((tin toan) OR (trinh toan)) cao*.