Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
hanh tai » thanh tai, hang tai, han tai
xuc ban » cuc ban, quoc ban, xuat ban
nang co » nang cao, nang doc, nang noi
tai cua » thai cua, tai cuc, tri cua
duc ban » duc tan, duc van, dua ban
cua te » cua tu
y nang » ky nang, ly nang, v nang
va cao » va cac, va dao, va bao
co hoi » co hoc, co loi
va co » vo co

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach y nang co hoi. hieu ((va cao) OR (va co)) ((xuc ban) or (duc ban)) hanh tai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach y nang co hoi. hieu ((va cao) OR (va co)) ((xuc ban) OR (duc ban)) hanh tai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach y nang co hoi. hieu ((va cao) OR (va co)) ((xuc ban) or (duc ban)) hanh tai cua te".
• Adding a wildcard symbol may retrieve word variants: toc sach y nang co hoi. hieu ((va cao) OR (va co)) ((xuc ban) or (duc ban)) hanh tai cua te*.