Perhaps you should try some spelling variations:
sanh thu » sach thu, san thu, doanh thu
thu xang » thu hang, thu bang, thu dang
hieu van » hieu va, thien van, lieu va
so sanh » do sanh
xang xa » lang xa, mang xa, ang xa
van cau » van dau, van hau, van chat
cua tre » cua te, cuu tre, cua triet
xac va » tac va, bac va, mac va
vi cua » vai cua, di cua
ac va » tac va, bac va, mac va

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sanh thu xang xa hoi. hieu van cau ((((xac va) or (ac va))) or (duc va)) hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sanh thu xang xa hoi. hieu van cau ((((xac va) OR (ac va))) OR (duc va)) hanh vi cua tre*.