Perhaps you should try some spelling variations:
canh manh » lanh manh, canh tranh, cach mang
theo chu » theo chieu, cho chu, chao chu
chu xanh » chu manh, chieu xanh, chua xang
cua dong » chua dong, cua cong, cua nong
cua dang » cua cong, cua ban
cong tap » cuong tap, cong tac, cong tan
tap toan » tap doan, tap quan, bai toan
toan cao » toan ban, toan tap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo chu xanh - canh manh ((cua dong) or (cua dang)) cong tap toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu xanh - canh manh ((cua dong) OR (cua dang)) cong tap toan cao.
• Adding a wildcard symbol may retrieve word variants: theo chu xanh - canh manh ((cua dong) or (cua dang)) cong tap toan cao*.