Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hanh dai » hanh tai, hanh dao, vanh dai
va hanh » van hanh, va thanh, va danh
dau xuc » dau xac, dau xua, dau nuoc
thi van » thi lan, thi hanh, thi nang
su tien » su kien, su hien, tu tieng
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
ma hoi » mai hoi, ma hoa, me hoi
xuc va » duc va, tuc va, luc va
dai su » dai sua, dai so, dan su

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

• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty nang ((ma hoi) OR (xa hoi)). ((thien van) OR (thi van)) dau xuc va hanh dai su tien~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ty nang ((ma hoi) OR (xa hoi)). ((thien van) or (thi van)) dau xuc va hanh dai su tien~".
• Adding a wildcard symbol may retrieve word variants: thu sach ty nang ((ma hoi) OR (xa hoi)). ((thien van) or (thi van)) dau xuc va hanh dai su tien*.