Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
nhung cong » dung cong, thong cong, hang cong
hoc chieu » hoc thieu, ho chieu, hoc hien
hanh sinh » hanh tinh, hanh dinh, hinh sinh
manh toan » thanh toan, anh tuan, tinh toan
dan than » dan chan, ban than, van than
sinh va » sinh vat, tinh va, dinh van

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 - hanh sinh va nhung cong ((dan than) or (manh toan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu xanh - hanh sinh va nhung cong ((dan than) OR (manh toan)) ban*.