Perhaps you should try some spelling variations:
ban hanh » ban hang
su sach » so sach, vu sach
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
sat ban » sao ban, sat van, bat ban
cua tre » cua te, cuu tre, cua triet
y lang » o lang, _ lang, tay lang
vi cua » vai cua, di cua
khao » khac, khai, thao

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach y lang xa hoi. hieu va khao sat ban hanh vi cua tre~.
• Adding a wildcard symbol may retrieve word variants: su sach y lang xa hoi. hieu va khao sat ban hanh vi cua tre*.