Perhaps you should try some spelling variations:
hien xanh » hien hanh, hien nhanh, chieu xanh
cong khan » cong khanh, cong nhan, cong phan
hanh san » thanh san, khach san, thanh son
cua hang » cua nhung, cua cong, cua ban
cua dang » cua cong, cua ban
cong han » cong hoan, cong nhan, cong phan
ta cau » tao cau, tra cau, va cau

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 hien xanh - hanh san ((cua hang) OR (cua dang)) ((cong han) OR (cong khan)) ta cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - hanh san ((cua hang) or (cua dang)) ((cong han) OR (cong khan)) ta cau~".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh san ((cua hang) or (cua dang)) ((cong han) OR (cong khan)) ta cau*.