Perhaps you should try some spelling variations:
chieu xanh » chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, hieu cach
chieu sang » hieu lang, nhieu tang
thanh tung » thanh cong
tung hanh » tung thanh, tung hinh, tung manh
hanh dung » thanh dung, anh dung, hanh dong
dung cong » dung trong
cong tap » cuong tap, cong tac, cong tan
tap toan » tap doan, tap quan, bai 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 ((chieu xanh) or (((chieu sach) or (chieu sang)))) - thanh tung hanh dung cong tap toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (((chieu sach) OR (chieu sang)))) - thanh tung hanh dung cong tap toan cau.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (((chieu sach) or (chieu sang)))) - thanh tung hanh dung cong tap toan cau*.