Perhaps you should try some spelling variations:
chinh trong » chinh cong
chieu sach » chinh sach, chiet tach, chieu sang
dinh trong » sinh trong, dinh thuong, dinh duong
chan long » chuan long, chat long, chan hong
long cong » luong cong, cong cong, tong cong
ho chieu » theo chieu, hoc thieu, doi chieu
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » 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 - ((chinh trong) or (dinh trong)) chan long cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - ((chinh trong) OR (dinh trong)) chan long cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - ((chinh trong) or (dinh trong)) chan long cong tac toan cau*.