Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trung tuan » trung thanh, trung tam, tran tuan
nhung cong » dung cong, thong cong, hang cong
theo lich » thai lich, theo sach
trung cua » truong cua, trung cap, dung cua
cong sang » cong san, cong lang, cong vang
sang bao » sang tao, san bao, sang bae

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((theo lich) or (chieu sach)) - manh ((trung cua) OR (trung tuan)) nhung cong sang bao cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((theo lich) OR (chieu sach)) - manh ((trung cua) OR (trung tuan)) nhung cong sang bao cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((theo lich) or (chieu sach)) - manh ((trung cua) OR (trung tuan)) nhung cong sang bao cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((theo lich) or (chieu sach)) - manh ((trung cua) OR (trung tuan)) nhung cong sang bao cao*.