Perhaps you should try some spelling variations:
cong thanh » cong trinh, cong tan, truong thanh
dong thanh » truong thanh
hanh tang » hanh trang, anh tang, hanh tung
hanh mang » nhanh mang, hanh trang, nhanh lang
qua trong » quan trong, qua trinh, qua song
chu xanh » chu manh, chieu xanh, chua xang
cho chu » cho thue
hoa cau » hoa cac, hoa dau, hoa mau

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: cho chu xanh - ((hanh tang) OR (hanh mang)) qua trong ((cong thanh) OR (dong thanh)) hoa cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "cho chu xanh - ((hanh tang) or (hanh mang)) qua trong ((cong thanh) OR (dong thanh)) hoa cau~".
• Adding a wildcard symbol may retrieve word variants: cho chu xanh - ((hanh tang) or (hanh mang)) qua trong ((cong thanh) OR (dong thanh)) hoa cau*.