Perhaps you should try some spelling variations:
thanh vi » hanh vi, thanh va, thanh ve
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
duc van » duc va, duc manh, duc phan
dua ban » dia ban, cua ban, qua ban
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
ve cac » va cac, vien cac
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 nang xa hoi. hieu ve cac ((((duc tan) or (dua ban))) or (duc van)) thanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang xa hoi. hieu ve cac ((((duc tan) OR (dua ban))) OR (duc van)) thanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach ty nang xa hoi. hieu ve cac ((((duc tan) or (dua ban))) or (duc van)) thanh vi cua tre*.