Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien danh
cong thanh » dong thanh, cong tan, truong thanh
thien anh » thien danh, tien anh, thien thanh
tinh ninh » ninh binh
cua nhung » va nhung
ninh cua » sinh cua, tinh cua, dinh cua
tra chap » tra chat, tranh chap, tran chau

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 ((thieu xanh) OR (thien anh)) - tinh ninh cua nhung ((cong thanh) OR (cong trinh)) tra chap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (thien anh)) - tinh ninh cua nhung ((cong thanh) OR (cong trinh)) tra chap~".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (thien anh)) - tinh ninh cua nhung ((cong thanh) OR (cong trinh)) tra chap*.