Perhaps you should try some spelling variations:
dang trong » dung trong, dong trong, lang trong
chieu sang » chieu sach, chieu xanh, hieu lang
canh manh » lanh manh, canh tranh, cach mang
ho chieu » theo chieu, hoc thieu, doi chieu
manh cua » doanh cua, ban cua
cua dang » cua cong, cua ban
tap toan » tap doan, tap quan, bai toan

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 sang - canh manh cua dang trong ((tan tran) or (tap toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - canh manh cua dang trong ((tan tran) OR (tap toan)) cau*.