Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
truong cao » truong dai
thong cong » trong cong, tong cong, thong thong
doi chieu » doc hieu, doi chi, ho chieu
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan tap » toan ban

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 - hanh ((truong cao) or (trung tam)) thong cong tac toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - hanh ((truong cao) OR (trung tam)) thong cong tac toan tap.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - hanh ((truong cao) or (trung tam)) thong cong tac toan tap*.