Perhaps you should try some spelling variations:
thanh vi » hanh vi, thanh va, thanh ve
vu sach » vu bach, su sach, vu khach
ky tang » ky nang, kho tang, ky trong
ky dang » ky nang, ky danh
van cau » van dau, van hau, van chat
xuc gia » duc gia, luc gia, tuc gia
cua tre » cua te, cuu tre, cua triet
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: vu sach ((ky tang) OR (ky dang)) xa hoi. hieu ((van cau) or (van nam)) xuc gia thanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ((ky tang) OR (ky dang)) xa hoi. hieu ((van cau) OR (van nam)) xuc gia thanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ((ky tang) OR (ky dang)) xa hoi. hieu ((van cau) or (van nam)) xuc gia thanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: vu sach ((ky tang) OR (ky dang)) xa hoi. hieu ((van cau) or (van nam)) xuc gia thanh vi cua tre*.