Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
manh trung » manh tung, thanh trung, manh hung
theo lich » thai lich, theo sach
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
cong sang » cong san, cong vang, cong bang
cong lang » cong vang, cong luong, cong quang

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