Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
sach 2 » sach y
luc va » tuc va, loc va
2 nang » v nang
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: thu sach 2 nang x hoi. hieu ve cham ((duc va) or (luc va)) hanh vi ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach 2 nang x hoi. hieu ve cham ((duc va) OR (luc va)) hanh vi ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: thu sach 2 nang x hoi. hieu ve cham ((duc va) or (luc va)) hanh vi ((cua tre) or (cuu tre))*.