Perhaps you should try some spelling variations:
khong dung » thong dung, phuong dung, cuong dung
hieu lang » chieu sang, hieu quang, nhieu tang
tranh van » tran van, trinh van, thanh van
van khong » van phong, van khang, va khong
dung tinh » dang tinh, dung ninh, dung tin
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 (chinh sach)) - canh tranh van khong dung tinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (chinh sach)) - canh tranh van khong dung tinh toan cau*.