Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
cong thanh » cong trinh, cong tan, truong thanh
dong thanh » truong thanh
manh dung » manh hung, manh tung, anh dung
cua nhung » va nhung
hoa sinh » cho sinh
dung cua » dung luan, dung cho
toan ban » van ban

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) or (hoa sinh)) - manh dung cua nhung ((cong thanh) OR (dong thanh)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (hoa sinh)) - manh dung cua nhung ((cong thanh) OR (dong thanh)) toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) or (hoa sinh)) - manh dung cua nhung ((cong thanh) OR (dong thanh)) toan ban".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (hoa sinh)) - manh dung cua nhung ((cong thanh) OR (dong thanh)) toan ban*.