Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
anh khoa » doanh khoa, hang khoa
dua tren » dung tren
hieu va » lieu va, hieu qua
xuc ban » duc ban, cuc ban, quoc ban
ban anh » ban hanh, ban banh, ban danh
y nang » ky nang, ly nang, v nang
nang o » nang co, nang ho, nang ro
va cam » va cham, va cac, va cao
cua te » cua tu
o hoi » co hoi, o hoc, o hai

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 y nang o hoi. hieu va cam xuc ban anh khoa ((dua tren) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y nang o hoi. hieu va cam xuc ban anh khoa ((dua tren) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: thu sach y nang o hoi. hieu va cam xuc ban anh khoa ((dua tren) or (cua te))*.