Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
hoang manh » hoang minh, hoang anh, hoang xanh
cong danh » cuong danh, cong dan, cong thanh
trung va » truong va, trang va, trung ha

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 ((chieu xanh) OR (chieu sang)) - thanh trung va nhung ((hoang manh) OR (cong danh)) van ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) OR (chieu sang)) - thanh trung va nhung ((hoang manh) or (cong danh)) van ban~".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) OR (chieu sang)) - thanh trung va nhung ((hoang manh) or (cong danh)) van ban*.