Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
chieu tu » chieu tro, lieu tu, chu tu
hanh tai » thanh tai, hang tai, han tai
sach ky » sac ky, sach y, sach ty
hieu tu » hieu tuc, hien tu, lieu tu
tai cua » thai cua, tai cuc, tri cua
cua tre » cua te, cuu tre, cua triet
lo van » vo van, so van, do van
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 ky nang x hoi. ((hieu tu) OR (chieu tu)) cham ((lo van) or (le van)) hanh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang x hoi. ((hieu tu) OR (chieu tu)) cham ((lo van) OR (le van)) hanh tai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky nang x hoi. ((hieu tu) OR (chieu tu)) cham ((lo van) or (le van)) hanh tai cua tre*".