Perhaps you should try some spelling variations:
sach thu » sach thue, sach thieu, sach tham
ban hanh » ban hang
chat xuc » chat huu, cam xuc, chao xu
cham xuc » cam xuc, cham soc, pham duc
so sach » so sanh, bo sach, co sach
hieu vu » hieu va, hieu ve, hieu su
nang xa » nang x, lang xa, nang ma
lang ha » long ha
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach thu ((nang xa) or (lang ha)) hoi. hieu vu ((cham xuc) or (chat xuc)) ban hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach thu ((nang xa) OR (lang ha)) hoi. hieu vu ((cham xuc) OR (chat xuc)) ban hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: so sach thu ((nang xa) or (lang ha)) hoi. hieu vu ((cham xuc) or (chat xuc)) ban hanh vi cua tre*.