Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trung gap » trung cap, thuong gap, trung tam
trung gay » trong gay, trung tam, trung cap
trung lap » trung cap, truong lam, truong lop
ho chieu » theo chieu, hoc thieu, doi chieu
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan cau » phan cau, can cau, chinh cau

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 - thanh ((((trung gap) OR (trung gay))) or (trung lap)) trong cong dan chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh ((((trung gap) OR (trung gay))) OR (trung lap)) trong cong dan chan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - thanh ((((trung gap) OR (trung gay))) or (trung lap)) trong cong dan chan cau".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh ((((trung gap) OR (trung gay))) or (trung lap)) trong cong dan chan cau*.