Perhaps you should try some spelling variations:
khong cong » thong cong, khong cang, chong cong
chieu tinh » trieu tinh, lieu tinh, chau tinh
doi chieu » doc hieu, doi chi, ho chieu
lanh sang » anh sang, lanh bang, doanh sang
cua khong » hua khong, cua phuong, cua thuong
anh dang » anh dong, anh dung, anh bang
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: doi chieu tinh - ((lanh sang) or (anh dang)) cua khong cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu tinh - ((lanh sang) OR (anh dang)) cua khong cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: doi chieu tinh - ((lanh sang) or (anh dang)) cua khong cong tac toan cau*.