Perhaps you should try some spelling variations:
den nguoi » dien nguoi, dung nguoi, con nguoi
nguoi can » nguoi san, nguoi dan, nguoi cao
song minh » tong minh, hoang minh, thong minh
sach cha » sach nha, sach che, sach ha
can song » can dong, cau song, con song
tu sach » thu sach, su sach, te sach
me giai » de giai, ve giai, ke giai
co song » con song, bo song, c song
co dong » o dong, cong dong, lao dong
cha den » cham den, thai den, chat deo

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tu sach cha me giai ((co song) OR (co dong)) minh ) or ( tu sach cha den nguoi can song minh ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach cha me giai ((co song) OR (co dong)) minh ) OR ( tu sach cha den nguoi can song minh ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( tu sach cha me giai ((co song) OR (co dong)) minh ) or ( tu sach cha den nguoi can song minh ))*".