Perhaps you should try some spelling variations:
thanh nhan » thanh phan, thanh san, thanh toan
ban thanh » ban hanh, ban hang
nhan cua » nhat cua, nhan luc, nhan su
ky trong » ly trong, ke trong, cay trong
cham duc » pham duc, cham soc, pham duy
hieu ve » hieu va, hieu van
duc ban » duc tan, duc van, dua ban
ve cham » va cham, ve chat, vu cham
cua tre » cua te, cuu tre, cua triet
ky dang » ky nang, ky danh
su sach » so sach, vu sach
su sac » 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) OR (su sach)) ((ky trong) or (ky dang)) xa hoi. hieu ve cham duc ban thanh nhan cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sac) OR (su sach)) ((ky trong) OR (ky dang)) xa hoi. hieu ve cham duc ban thanh nhan cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sac) OR (su sach)) ((ky trong) or (ky dang)) xa hoi. hieu ve cham duc ban thanh nhan cua tre".
• Adding a wildcard symbol may retrieve word variants: ((su sac) OR (su sach)) ((ky trong) or (ky dang)) xa hoi. hieu ve cham duc ban thanh nhan cua tre*.