Perhaps you should try some spelling variations:
thien danh » thien dang, thien thanh, thien chanh
thieu xanh » chieu xanh, hieu manh
hanh tranh » canh tranh, hanh trinh, hanh trang
thien anh » tien anh, thien thanh, thien chanh
tranh cua » doanh cua, manh cua
cua trung » cua truong, xuan trung, cua nhung
uong dan » huong dan, tuong dan, xuong dan
dan than » dan chan, ban than, van than
than tap » toan tap, han tap, phan tap

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: hoc ((thieu xanh) OR (((thien anh) OR (thien danh)))) - hanh tranh cua trung uong dan than tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (((thien anh) OR (thien danh)))) - hanh tranh cua trung uong dan than tap~".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (((thien anh) OR (thien danh)))) - hanh tranh cua trung uong dan than tap*.