Perhaps you should try some spelling variations:
hanh trong » hanh trang, hinh trong, chinh trong
chiet tach » chieu sach
hieu lang » chieu sang, hieu quang, nhieu tang
anh trong » anh thuong, dinh trong, lang trong
dung cong » dung trong
van dung » van dong, xay dung, tin dung
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 ((chiet tach) or (hieu lang)) - ((hanh trong) or (anh trong)) van dung cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chiet tach) OR (hieu lang)) - ((hanh trong) OR (anh trong)) van dung cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: ho ((chiet tach) or (hieu lang)) - ((hanh trong) or (anh trong)) van dung cong tac toan cau*.