Perhaps you should try some spelling variations:
cong thanh » cong trinh, cong tan, truong thanh
dong thanh » truong thanh
hieu xanh » chieu xanh, hieu manh, hieu nganh
tranh cua » doanh cua, manh cua
cua nhung » va nhung
doc hieu » toc thieu, hoc thieu, hoc hien
phan can » phan cang, phan van, phan cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu xanh - canh tranh cua nhung ((cong thanh) OR (dong thanh)) phan can~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - canh tranh cua nhung ((cong thanh) OR (dong thanh)) phan can".
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - canh tranh cua nhung ((cong thanh) OR (dong thanh)) phan can*.