Perhaps you should try some spelling variations:
trinh toan » tinh toan, thanh toan, trinh han
chieu sang » chieu sach, chieu xanh, hieu lang
canh manh » lanh manh, canh tranh, cach mang
dang cong » dung cong
cua sinh » hoa sinh, va sinh
manh cua » doanh cua, ban cua
cua dang » cua cong, cua ban
vinh van » dinh van, trinh van, sinh vat

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (cua sinh)) - canh manh cua dang cong ((vinh van) OR (trinh toan)) ban~.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (cua sinh)) - canh manh cua dang cong ((vinh van) or (trinh toan)) ban*.