Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
truong cao » truong dai
truong ca » truong va, trong ca, truong dai
ho chieu » theo chieu, hoc thieu, doi chieu
cong san » cong tac
chon cac » cho cac, thong cac, chon loc
hoc cac » hoc cao

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 ((truong ca) or (truong cao)) trong cong san ((chon cac) OR (hoc cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh ((truong ca) OR (truong cao)) trong cong san ((chon cac) OR (hoc cac)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - thanh ((truong ca) or (truong cao)) trong cong san ((chon cac) OR (hoc cac))".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh ((truong ca) or (truong cao)) trong cong san ((chon cac) OR (hoc cac))*.