Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
va thanh » gia thanh, ban thanh, va tinh
thanh va » thanh van, hanh va, thanh ha
tu sach » thu sach, su sach, tu cach
te sach » toc sach
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
va cua » va chua, via cua, ca cua
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 sach) or (((te sach) or (hoc sach)))) ky nang x hoi. hieu ve pham duc va thanh va cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (((te sach) OR (hoc sach)))) ky nang x hoi. hieu ve pham duc va thanh va cua te.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (((te sach) or (hoc sach)))) ky nang x hoi. hieu ve pham duc va thanh va cua te*.