Perhaps you should try some spelling variations:
thanh trung » thanh tung
trung thanh » truong thanh
thanh thong » thanh thuong, thanh hong, thanh thang
thieu xanh » chieu xanh, hieu manh, thien anh
vien nganh » vien thanh
thong dan » thong van, tuong dan, thong den
phan cau » phan dau, phan cac, phan lap

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 (vien nganh)) - thanh trung thanh thong thong dan ((phan cau) OR (phan tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (vien nganh)) - thanh trung thanh thong thong dan ((phan cau) OR (phan tu))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (vien nganh)) - thanh trung thanh thong thong dan ((phan cau) OR (phan tu))*".