Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hang cong » dang cong, hang nong, bang cong
ho chieu » theo chieu, hoc thieu, doi chieu
sinh cua » manh cua, dinh cuu, sinh va
tap toan » tap doan, tap quan
bai toan » bai tap
luat » luan, xuat

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 - hanh ((trinh luat) or (sinh cua)) hang cong ((tap toan) OR (bai toan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - hanh ((trinh luat) OR (sinh cua)) hang cong ((tap toan) OR (bai toan)) ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu xanh - hanh ((trinh luat) or (sinh cua)) hang cong ((tap toan) OR (bai toan)) ban*".