Perhaps you should try some spelling variations:
thanh trinh » thanh tinh, thanh binh, thanh trung
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
cua nhung » va nhung
thanh cau » thanh chau, nhanh cau, thanh ca
thanh mau » hanh mau, thanh san, thanh hai
ho hieu » ho chieu, hoi hieu, nho hieu
cong so » cong san, cong hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu lang - ((thanh trinh) OR (hanh trinh)) cua nhung cong so ((thanh cau) or (thanh mau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - ((thanh trinh) OR (hanh trinh)) cua nhung cong so ((thanh cau) OR (thanh mau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu lang - ((thanh trinh) OR (hanh trinh)) cua nhung cong so ((thanh cau) or (thanh mau))".
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - ((thanh trinh) OR (hanh trinh)) cua nhung cong so ((thanh cau) or (thanh mau))*.