Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
quang cong » quang cuong, quang dong, quang hoang
doi chieu » doc hieu, doi chi, mot chieu
trung hoc » trung quoc
cong lang » cong vang, cong luong, cong quang
trung ha » trung tam, trung cap
thong tu » phong tuc, thong ke
tin » tinh

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sach - thanh ((trung ha) OR (trung hoc)) quang cong lang ((thong tu) OR (thong tin))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - thanh ((trung ha) OR (trung hoc)) quang cong lang ((thong tu) OR (thong tin))".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh ((trung ha) OR (trung hoc)) quang cong lang ((thong tu) OR (thong tin))*.