Perhaps you should try some spelling variations:
toan phuong » doan phuong, tran phuong, toan thuong
thieu xanh » chieu xanh, hieu manh, thien danh
phuong dan » phuong danh, phuong doan, huong dan
thien anh » thien danh, tien anh, thien thanh
hanh tang » hanh trang, anh tang, hanh tung
hanh mang » nhanh mang, hanh trang, nhanh lang
cua toan » cuu toan, xuan toan, cua thanh
dan van » dang van, doan van, dao van

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) or (thien anh)) - ((hanh tang) OR (hanh mang)) cua toan phuong dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (thien anh)) - ((hanh tang) OR (hanh mang)) cua toan phuong dan van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (thien anh)) - ((hanh tang) OR (hanh mang)) cua toan phuong dan van ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (thien anh)) - ((hanh tang) OR (hanh mang)) cua toan phuong dan van ban*.