Perhaps you should try some spelling variations:
thien van » thi van
thanh lap » thanh san, phan lap, thanh hai
hanh lai » hanh lam, hanh tai, thanh loi
nang cau » nang cao, hang cau, nang dau
van cham » van chat, van tham, va cham
te sach » toc sach
cua tre » cua te, cuu tre, cua triet
sach ky » sac ky, sach y, sach ty
luc va » duc va, tuc va, loc va
xuc va » duc va, tuc va, xac va

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang cau hoi. thien van cham ((xuc va) OR (luc va)) ((hanh lai) or (thanh lap)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang cau hoi. thien van cham ((xuc va) OR (luc va)) ((hanh lai) OR (thanh lap)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang cau hoi. thien van cham ((xuc va) OR (luc va)) ((hanh lai) or (thanh lap)) cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang cau hoi. thien van cham ((xuc va) OR (luc va)) ((hanh lai) or (thanh lap)) cua tre*.