Perhaps you should try some spelling variations:
thanh toan » thanh hoa, thanh san, tinh toan
chieu xanh » chieu sach, chieu sang, chieu tinh
hieu manh » hieu nganh, dieu hanh, hien hanh
hanh dung » thanh dung, anh dung, hanh dong
bang song » nang song
manh toan » anh tuan, tinh toan
dung cua » dung luan, dung cho
cua bang » chua bang, cua ban, cua dang

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hieu manh) or (chieu xanh)) - hanh dung cua bang song ((manh toan) or (thanh toan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (chieu xanh)) - hanh dung cua bang song ((manh toan) OR (thanh toan)) ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (chieu xanh)) - hanh dung cua bang song ((manh toan) or (thanh toan)) ban*.