Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
thang cua » thong cua, hang cua, tang cua
than cua » nhan cua, thai cua, ban cua
cang dan » cong dan, tang dan, dang dan
canh dan » canh van, sanh dan, thanh dan
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu xanh - thanh ((thang cua) OR (than cua)) thuong ((cang dan) or (canh dan)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - thanh ((thang cua) OR (than cua)) thuong ((cang dan) OR (canh dan)) toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - thanh ((thang cua) OR (than cua)) thuong ((cang dan) or (canh dan)) toan tap".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh ((thang cua) OR (than cua)) thuong ((cang dan) or (canh dan)) toan tap*.