Perhaps you should try some spelling variations:
nhung song » nhung cong, nhung bong, nhung chong
tieu xanh » tieu danh, chieu xanh, dieu hanh
nhan dang » nhan dan, phan dang, tran dang
song van » hoang van, trong van, duong van
toan cau » toan cao, toan ban, toan tap
dang va » dang van, dang vat, hang va
tan cau » van cau, tan ca, tao cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu xanh - nhan dang va nhung song van ((tan cau) OR (toan cau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - nhan dang va nhung song van ((tan cau) OR (toan cau))".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - nhan dang va nhung song van ((tan cau) OR (toan cau))*.