Perhaps you should try some spelling variations:
sach tham » sach nha
tham nang » nham nang, tham lang, tham nhung
tu sach » thu sach, su sach, te sach
hanh va » hang va, hanh vi
han tai » hang tai, nhan tai, van tai
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, ve cac, ve cai
xuc va » duc va, tuc va, luc va
va cam » va cham, va cac, va cao
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: tu sach tham nang x hoi. hieu ((ve cam) OR (va cam)) xuc va ((han tai) or (hanh va)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tham nang x hoi. hieu ((ve cam) OR (va cam)) xuc va ((han tai) OR (hanh va)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach tham nang x hoi. hieu ((ve cam) OR (va cam)) xuc va ((han tai) or (hanh va)) cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach tham nang x hoi. hieu ((ve cam) OR (va cam)) xuc va ((han tai) or (hanh va)) cua tre*.