Perhaps you should try some spelling variations:
chieu khong » chu khong, chieu duong, dieu khong
chien chong » thien cong
chieu sang » chieu sach, chieu xanh, hieu lang
thanh tran » thanh trang, thanh toan, thanh tra
quang dung » quang trung, ung dung, cuong dung
dung cong » dung trong
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: hoc ((((chieu khong) or (chien chong))) or (chieu sang)) - thanh tran quang dung cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((chieu khong) OR (chien chong))) OR (chieu sang)) - thanh tran quang dung cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((((chieu khong) or (chien chong))) or (chieu sang)) - thanh tran quang dung cong tac toan cau*.