Perhaps you should try some spelling variations:
sach tham » sach nha
hanh va » hang va
bao suc » bao luc, cao suc, bao thuc
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
sach ty » sach y, sach tu, sach thu
ve bao » te bao, va bao
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: te ((sach ty) or (sach tham)) nang x hoi. hieu ve bao suc manh ((hanh va) OR (hanh vi)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ty) OR (sach tham)) nang x hoi. hieu ve bao suc manh ((hanh va) OR (hanh vi)) cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ty) or (sach tham)) nang x hoi. hieu ve bao suc manh ((hanh va) OR (hanh vi)) cua tre*".