Perhaps you should try some spelling variations:
hieu xanh » chieu xanh, hieu manh, hieu nganh
hang nong » thang long, han tong
doc hieu » toc thieu, hoc thieu, hoc hien
mang cua » manh cua, ban cua, cong cua
dung cua » dung luan, dung cho
dan than » dan chan, ban than, van than
van quan » van ban

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: doc hieu xanh - hanh ((mang cua) OR (dung cua)) hang nong ((dan than) OR (van quan)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - hanh ((mang cua) OR (dung cua)) hang nong ((dan than) or (van quan)) cau~".
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - hanh ((mang cua) OR (dung cua)) hang nong ((dan than) or (van quan)) cau*.