Perhaps you should try some spelling variations:
thanh sinh » thanh tinh, thanh vinh, thanh kinh
thanh binh » thai binh, than kinh, tinh binh
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
cua tre » cua te, cuu tre, cua triet
va cao » va co, va dao, va bao
xuc va » duc va, tuc va, luc va

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 dang xa hoi. hieu ((va cac) or (va cao)) xuc va ((thanh sinh) OR (thanh binh)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky dang xa hoi. hieu ((va cac) OR (va cao)) xuc va ((thanh sinh) OR (thanh binh)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky dang xa hoi. hieu ((va cac) or (va cao)) xuc va ((thanh sinh) OR (thanh binh)) cua tre".
• Adding a wildcard symbol may retrieve word variants: vu sach ky dang xa hoi. hieu ((va cac) or (va cao)) xuc va ((thanh sinh) OR (thanh binh)) cua tre*.