Perhaps you should try some spelling variations:
thanh gian » thanh giang, thach giang, thanh san
ban thanh » ban hanh, ban hang
gian cua » gian xu, ban cua
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
van bac » van ban, van bao, van hac
van cau » van dau, van hau, van chat
duc ban » duc tan, duc van, dua ban
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 ky nang xa hoi. hieu ((van bac) or (van cau)) duc ban thanh gian cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. hieu ((van bac) OR (van cau)) duc ban thanh gian cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. hieu ((van bac) or (van cau)) duc ban thanh gian cua tre*.