Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
toc sach » doc sach, thuoc sach, nuoc sach
hoc sach » hoc sinh, hoc cac, hoc anh
cua viet » ca viet, hoa viet, cua vat
nang xa » nang x, lang xa, nang ma
van cac » van hac, van cau, van bac
xuc gia » duc gia, luc gia, tuc gia
hai cua » thai cua, dai cua, hoi cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (hoc sach)) ky nang xa hoi. thi ((van cac) OR (van ban)) xuc gia thanh hai cua viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) OR (hoc sach)) ky nang xa hoi. thi ((van cac) or (van ban)) xuc gia thanh hai cua viet~".
• Adding a wildcard symbol may retrieve word variants: ((toc sach) OR (hoc sach)) ky nang xa hoi. thi ((van cac) or (van ban)) xuc gia thanh hai cua viet*.