Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
chat soc » cham soc, chat hoc, chat doc
va thanh » gia thanh, ban thanh, va tinh
tu sach » thu sach, su sach, te sach
cua tre » cuu tre, cua triet, dua tren
ve chat » va chat, van chat
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
tao hoi » tao khoi, tay hoi, thao hoc
ky sang » ky nang, ky dang, ky tang
soc va » hoc va, loc va, doc va
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky sang ((tao hoi) OR (tao boi)). hieu ve chat soc va thanh lap ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky sang ((tao hoi) OR (tao boi)). hieu ve chat soc va thanh lap ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky sang ((tao hoi) OR (tao boi)). hieu ve chat soc va thanh lap ((cua tre) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: tu sach ky sang ((tao hoi) OR (tao boi)). hieu ve chat soc va thanh lap ((cua tre) or (cua te))*.