Perhaps you should try some spelling variations:
thi hang » thi hanh, thi nang, thi hong
su sach » so sach, vu sach
tinh vi » trinh vi, tinh voi, tinh va
va tinh » may tinh
cam luc » cam xuc, cau luc
ty hang » ly hang, ty xang, thu hang
ty dang » ty xang, ky dang, ty dong
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: su sach ((ty dang) or (((ty hang) OR (thi hang)))) xa hoi. lieu va cam luc va tinh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ty dang) OR (((ty hang) OR (thi hang)))) xa hoi. lieu va cam luc va tinh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ty dang) or (((ty hang) OR (thi hang)))) xa hoi. lieu va cam luc va tinh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach ((ty dang) or (((ty hang) OR (thi hang)))) xa hoi. lieu va cam luc va tinh vi cua tre*.