Perhaps you should try some spelling variations:
cong thanh » cong trinh, cong tan, truong thanh
dong thanh » truong thanh
hanh sang » anh sang, hanh mang, lanh sang
thanh cau » thanh chau, thanh mau, nhanh cau
chi xanh » chi anh, chi danh, chi hanh
hanh san » thanh san, khach san, thanh son
va thong » va thuong, va phuong, he thong
doi chi » doi khi

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi xanh - ((hanh sang) or (hanh san)) va thong ((cong thanh) OR (dong thanh)) thanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi xanh - ((hanh sang) OR (hanh san)) va thong ((cong thanh) OR (dong thanh)) thanh cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chi xanh - ((hanh sang) or (hanh san)) va thong ((cong thanh) OR (dong thanh)) thanh cau*".