Perhaps you should try some spelling variations:
thanh doi » thanh loi, thanh moi, thanh hoai
qua cham » qua hai, qua cac, va cham
cham duc » pham duc, cham soc, pham duy
thanh do » thanh de, thanh pho, thanh hoa
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
cuu tre » cua tre, cau tren, cau treo
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky nang x hoi. hieu qua cham duc va ((thanh doi) OR (thanh do)) ((cuu tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang x hoi. hieu qua cham duc va ((thanh doi) OR (thanh do)) ((cuu tre) OR (cua te))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang x hoi. hieu qua cham duc va ((thanh doi) OR (thanh do)) ((cuu tre) or (cua te))*".