Perhaps you should try some spelling variations:
khong cong » thong cong, chong cong, khong con
chieu sach » chinh sach, chiet tach, chieu sang
khong cang » thong cong, hong bang, khong dung
thanh chau » thanh cha, thanh cham, thanh chu
tac thanh » bac thanh, cac thanh, tcc thanh
ho chieu » theo chieu, hoc thieu, doi chieu
anh sang » lanh sang, anh bang, anh dang
anh dung » anh dong, anh huong, sach dung

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