Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, ve cac, va cam
va cao » va cac, va co, va dao
di cua » dai cua, doi cua, de cua
tuan » quan, tran, luan

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 nang xa hoi. hieu ((ve cam) or (va cao)) xuc ((van thanh) or (tuan anh)) di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. hieu ((ve cam) OR (va cao)) xuc ((van thanh) OR (tuan anh)) di cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. hieu ((ve cam) or (va cao)) xuc ((van thanh) or (tuan anh)) di cua tre*.