Perhaps you should try some spelling variations:
ban hanh » ban hang
te sach » toc sach
vu sach » vu bach, su sach, vu khach
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
duc ban » duc tan, duc van, dua ban
cuu tre » cua tre, cau tren, cau treo
vi cuu » vi luu, vinh cuu
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: ((te sach) or (vu sach)) ky nang x hoi. hieu ve pham duc ban hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (vu sach)) ky nang x hoi. hieu ve pham duc ban hanh vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (vu sach)) ky nang x hoi. hieu ve pham duc ban hanh vi cuu tre*.