Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu xanh » chieu xanh, thien anh, thien danh
cong quang » luong quang, thong quang, duong quang
hieu manh » chieu xanh, hieu nganh, dieu hanh
trung va » truong va, trang va, trung ha
cong van » cong vang, cong san, song van
van cau » van dau, van hau, van chat

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 (hieu manh)) - thanh trung va nhung ((cong van) or (cong quang)) van cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (hieu manh)) - thanh trung va nhung ((cong van) OR (cong quang)) van cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) OR (hieu manh)) - thanh trung va nhung ((cong van) or (cong quang)) van cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) OR (hieu manh)) - thanh trung va nhung ((cong van) or (cong quang)) van cau*.