Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
hinh hanh » hinh thanh, hinh anh, dinh thanh
manh toan » thanh toan, anh tuan, tinh toan
dan than » dan chan, ban than, van than
hanh va » hang va, hanh vi

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 xanh) or (chieu sach)) - hinh hanh va nhung cong ((manh toan) or (dan than)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (chieu sach)) - hinh hanh va nhung cong ((manh toan) OR (dan than)) tap.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (chieu sach)) - hinh hanh va nhung cong ((manh toan) or (dan than)) tap*.