Perhaps you should try some spelling variations:
hinh trong » chinh trong, dinh trong, sinh trong
chieu sach » chinh sach, chiet tach, chieu sang
trong chan » trong chuan, trong cham, trong can
hieu lang » chieu sang, hieu quang, nhieu tang
chan long » chuan long, chat long, chan hong
long cong » luong cong, cong cong, tong cong
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) or (hieu lang)) - hinh trong chan long cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (hieu lang)) - hinh trong chan long cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (hieu lang)) - hinh trong chan long cong tac toan cau*.