Perhaps you should try some spelling variations:
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
cam duc » cam xuc, cao duc, pham duc
duc gia » quoc gia
va cam » va cham, va cac, va cao
de cua » te cua, dieu cua
le cua » ly cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ky nang xa hoi. lieu va cam duc gia thanh ((de cua) OR (le cua)) te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky nang xa hoi. lieu va cam duc gia thanh ((de cua) OR (le cua)) te".
• Adding a wildcard symbol may retrieve word variants: so sach ky nang xa hoi. lieu va cam duc gia thanh ((de cua) OR (le cua)) te*.