Perhaps you should try some spelling variations:
bach tuoc » sach duoc, sach nuoc
su sach » so sach, vu sach
xa hanh » xa thanh, xa khanh, va hanh
bac tuc » bac tu, bac thua
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
vu nang » vuc nang, va nang, vu dang
so sanh » do sanh
vi cua » vai cua, di cua
x hoi » xa hoi, o hoi, x ho

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) or (so sanh)) vu nang x hoi. hieu va ((bac tuc) or (bach tuoc)) xa hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sanh)) vu nang x hoi. hieu va ((bac tuc) OR (bach tuoc)) xa hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sanh)) vu nang x hoi. hieu va ((bac tuc) or (bach tuoc)) xa hanh vi cua tre*.