Perhaps you should try some spelling variations:
nhan duc » nhan duoc, nhan luc, phan duc
hoc sach » hoc sinh, hoc cac, hoc anh
ban hanh » ban hang
duc ban » duc tan, duc van, dua ban
hanh di » hanh vi, hanh de, hang di
cuu tre » cua tre, cau tren, cau treo
ve nhan » ve nha, de nhan, va nhan
hieu ve » hieu va, hieu van
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cac) or (hoc sach)) ky nang x hoi. hieu ve nhan duc ban hanh di ((cua te) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cac) OR (hoc sach)) ky nang x hoi. hieu ve nhan duc ban hanh di ((cua te) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: ((tu cac) or (hoc sach)) ky nang x hoi. hieu ve nhan duc ban hanh di ((cua te) or (cuu tre))*.