Perhaps you should try some spelling variations:
sach tren » sach tien, sach tranh
hieu van » hieu va, thien van, lieu va
ban hanh » ban hang
sach thu » sach thue, sach thieu, sach tham
sach tru » sach truc, sach tu, sach thue
cuc ban » cua ban, cac ban, cuu ban
cam cuc » cam xuc, cham cuu, pham cuc
nang xa » nang x, lang xa, nang ma
van cam » van nam, van lam, van cau
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: tu ((((sach tru) OR (sach tren))) or (sach thu)) nang xa hoi. hieu van cam cuc ban hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((((sach tru) OR (sach tren))) OR (sach thu)) nang xa hoi. hieu van cam cuc ban hanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((((sach tru) OR (sach tren))) or (sach thu)) nang xa hoi. hieu van cam cuc ban hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: tu ((((sach tru) OR (sach tren))) or (sach thu)) nang xa hoi. hieu van cam cuc ban hanh vi cua tre*.