Perhaps you should try some spelling variations:
thanh truong » thanh trung, thanh thuong, thanh tung
hieu quang » thieu quang, hieu quan, hieu qua
chieu sach » chinh sach, chiet tach, chieu sang
hieu lang » chieu sang, nhieu tang, hieu van
dai trong » tai trong, bai trong, dai tuong
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 ((((hieu lang) or (hieu quang))) or (chieu sach)) - thanh truong dai trong cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((((hieu lang) OR (hieu quang))) OR (chieu sach)) - thanh truong dai trong cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: ho ((((hieu lang) or (hieu quang))) or (chieu sach)) - thanh truong dai trong cong tac toan cau*.