Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
toc sach » doc sach, thuoc sach, nuoc sach
thanh le » thinh le, thanh ve, thanh de
hoc sach » hoc sinh, hoc cac, hoc anh
xuc van » duc van, luc van, vuc van
hieu ve » hieu va, hieu van
sang ma » tang ma, sang tao, mang may
cua tre » cua te, cuu tre, cua triet
nang ma » tang ma, nang cao, mang may
ve cam » ve cham, ve cac, va cam
le cua » ly cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc sach) or (hoc sach)) v ((nang ma) OR (sang ma)) hoi. hieu ve cam xuc van thanh le cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (hoc sach)) v ((nang ma) OR (sang ma)) hoi. hieu ve cam xuc van thanh le cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) or (hoc sach)) v ((nang ma) OR (sang ma)) hoi. hieu ve cam xuc van thanh le cua tre".
• Adding a wildcard symbol may retrieve word variants: ((toc sach) or (hoc sach)) v ((nang ma) OR (sang ma)) hoi. hieu ve cam xuc van thanh le cua tre*.