Perhaps you should try some spelling variations:
thanh nhan » thanh phan, thanh san, thanh toan
ban thanh » ban hanh, ban hang
ky trong » ly trong, ke trong, cay trong
hieu van » hieu va, thien van, lieu va
van cham » van chat, van tham, va cham
cham duc » pham duc, cham soc, pham duy
nhan cua » nhat cua, nhan luc, nhan su
ky dang » ky danh
duc ban » duc tan, duc van, dua ban
cua tre » cua te, cuu tre, cua triet
su sac » su sach, su cac, su xac

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ((ky trong) or (((ky dang) OR (ky nang)))) xa hoi. hieu van cham duc ban thanh nhan cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ((ky trong) OR (((ky dang) OR (ky nang)))) xa hoi. hieu van cham duc ban thanh nhan cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ((ky trong) or (((ky dang) OR (ky nang)))) xa hoi. hieu van cham duc ban thanh nhan cua tre".
• Adding a wildcard symbol may retrieve word variants: su sac ((ky trong) or (((ky dang) OR (ky nang)))) xa hoi. hieu van cham duc ban thanh nhan cua tre*.