Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
lieu van » hieu van, sieu van, lieu nano
ban hang » ngan hang
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
xuc ban » duc ban, cuc ban, quoc ban
hang vi » hang va, hanh vi, hang di
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: ((te sach) or (toc sach)) ky dang xa hoi. ((lieu van) or (lieu va)) cam xuc ban hang vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ky dang xa hoi. ((lieu van) OR (lieu va)) cam xuc ban hang vi cua tre.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (toc sach)) ky dang xa hoi. ((lieu van) or (lieu va)) cam xuc ban hang vi cua tre*.