Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
tranh van » tran van, trinh van, thanh van
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
van dung » van dong, xay dung, tin dung
tap toan » tap doan, tap quan
bai toan » bai tap
van tan » van tuan, van ban, van tai

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 - canh tranh van dung cong ((((tap toan) or (bai toan))) or (van tan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - canh tranh van dung cong ((((tap toan) OR (bai toan))) OR (van tan)) ban.
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - canh tranh van dung cong ((((tap toan) or (bai toan))) or (van tan)) ban*.