Perhaps you should try some spelling variations:
so sach » so sanh, bo sach, co sach
ty dang » ky dang, ty dong, thu dang
ty hang » ly hang, thi hang, thu hang
cam luc » cam xuc, cau luc
va tinh » may tinh
tinh vi » trinh vi, tinh voi, tinh va
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao
luc va » duc va, tuc va, loc va
vi cua » vai cua, di 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 ((ty dang) or (((ty hang) OR (ty xang)))) xa hoi. lieu va cam luc va tinh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ((ty dang) OR (((ty hang) OR (ty xang)))) xa hoi. lieu va cam luc va tinh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ((ty dang) or (((ty hang) OR (ty xang)))) xa hoi. lieu va cam luc va tinh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: so sach ((ty dang) or (((ty hang) OR (ty xang)))) xa hoi. lieu va cam luc va tinh vi cua tre*.