Perhaps you should try some spelling variations:
chiet tach » chieu sach
thao duong » hai duong, thuy duong, tuan duong
cong thao » cong thai, cong thanh, chong tham
ho chiet » ho chieu, ho thiet, hoc thiet
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
phan cau » phan dau, phan cac, phan tu

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 - thanh cong thao duong ((cong dan) OR (cong san)) phan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chiet tach - thanh cong thao duong ((cong dan) OR (cong san)) phan cau".
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - thanh cong thao duong ((cong dan) OR (cong san)) phan cau*.