Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu xanh » chieu xanh, hieu manh, thien danh
khong cong » thong cong, chong cong, khong con
khong cang » thong cong, hong bang, khong dung
thien anh » thien danh, tien anh, thien thanh
trung cua » truong cua, trung tuan, trung cap
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu xanh) or (thien anh)) - thanh trung cua ((khong cong) OR (khong cang)) dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (thien anh)) - thanh trung cua ((khong cong) OR (khong cang)) dan than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (thien anh)) - thanh trung cua ((khong cong) OR (khong cang)) dan than cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (thien anh)) - thanh trung cua ((khong cong) OR (khong cang)) dan than cau*.