Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
khong cong » thong cong, khong cang, chong cong
doi chieu » doc hieu, doi chi, ho chieu
manh cua » doanh cua
van toan » van tan, van thanh, manh toan
van tuan » van quan, van ban, anh tuan
ban cua » ban quan

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