Perhaps you should try some spelling variations:
thanh sang » thanh san, thanh hang, thanh hoang
van thanh » ban thanh, van tuan
cham duc » pham duc, cham soc, pham duy
sang cua » mang cua, song cua, hang cua
tu sach » thu sach, su sach, te sach
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
duc van » duc va, duc tan, duc manh
cua tre » cua te, cuu tre, cua triet

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) or (tu cac)) ky lang xa hoi. hieu vu cham duc van thanh sang cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (tu cac)) ky lang xa hoi. hieu vu cham duc van thanh sang cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (tu cac)) ky lang xa hoi. hieu vu cham duc van thanh sang cua tre*.