Perhaps you should try some spelling variations:
phuong danh » phuong anh, phuong dinh, phuong hanh
thieu xanh » chieu xanh, hieu manh, thien anh
phuong dan » phuong doan, huong dan, phuong lan
hoc thieu » toc thieu, hoc hien
tang luan » dung luan
tranh cua » doanh cua, manh cua
chan tu » phan tu, han tu, chon tu

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 - hanh ((tang luan) OR (tranh cua)) nhung ((phuong dan) OR (phuong danh)) chan tu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - hanh ((tang luan) or (tranh cua)) nhung ((phuong dan) OR (phuong danh)) chan tu~".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh ((tang luan) or (tranh cua)) nhung ((phuong dan) OR (phuong danh)) chan tu*.