Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
thi hanh » thi thanh
hac nuoc » hoc nuoc, cac nuoc, phap nuoc
thai cua » tai cuc, tri cua, dai cua
than cua » nhan cua, ban cua, gian cua
sach ky » sac ky, sach y, sach ty
thi van » thi lan, thi nang
va dang » van dang, va nang, va lang
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: thuoc sach ky nang x hoi. ((thi van) OR (thi hanh)) hac nuoc va dang ((thai cua) or (than cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ky nang x hoi. ((thi van) OR (thi hanh)) hac nuoc va dang ((thai cua) OR (than cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach ky nang x hoi. ((thi van) OR (thi hanh)) hac nuoc va dang ((thai cua) or (than cua)) tre".
• Adding a wildcard symbol may retrieve word variants: thuoc sach ky nang x hoi. ((thi van) OR (thi hanh)) hac nuoc va dang ((thai cua) or (than cua)) tre*.