Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
dang sinh » dang dinh, khang sinh, dang hanh
ho chieu » theo chieu, hoc thieu, doi chieu
dong tin » thong tin, luong tin, dong kinh
toan tai » toan tap, doanh tai, toan ban
toan cao » toan ban, toan tap

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 - thanh trung cua nhung ((dang sinh) or (dong tin)) ((toan tai) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh trung cua nhung ((dang sinh) OR (dong tin)) ((toan tai) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh trung cua nhung ((dang sinh) or (dong tin)) ((toan tai) or (toan cao))*.