Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
hieu van » hieu va, thien van, hieu ve
va thanh » gia thanh, ban thanh, va tinh
thanh di » thanh doi, thanh de, thanh do
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
cau xuc » cam xuc, cau luc, cau truc
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc va
di cua » dai cua, doi cua, de 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 ky nang xa hoi. ((hieu van) or (lieu va)) cau xuc va thanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky nang xa hoi. ((hieu van) OR (lieu va)) cau xuc va thanh di cua tre.
• Adding a wildcard symbol may retrieve word variants: toc sach ky nang xa hoi. ((hieu van) or (lieu va)) cau xuc va thanh di cua tre*.