Perhaps you should try some spelling variations:
sach thu » sach thue, sach thieu, sach tham
van cam » van nam, van lam, van cau
san cua » sang cua, ban cua, dan cua
thi van » thi lan, thi hanh, thi nang
sach ty » sach y, sach tu, xach tay
cua tre » cua te, cuu tre, cua triet
tuc va » thuc va, truc va, duc va
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 ty) OR (sach thu)) nang x hoi. thi van cam ((tuc va) or (tuc xa)) thanh san cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach thu)) nang x hoi. thi van cam ((tuc va) OR (tuc xa)) thanh san cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ty) OR (sach thu)) nang x hoi. thi van cam ((tuc va) or (tuc xa)) thanh san cua tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) OR (sach thu)) nang x hoi. thi van cam ((tuc va) or (tuc xa)) thanh san cua tre*.