Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
chat xuc » chat huu, cam xuc, chao xu
ky sang » ky nang, ky dang, ky tang
sang ma » tang ma, nang ma, sang tao
hieu va » lieu va, hieu qua
cac xuc » cam xuc, cac nuoc, cac cuoc
sach ky » sac ky, sach y, sach ty
tai duc » tai cuc, mai duc, tran duc
va hanh » van hanh, va thanh, va danh
tai du » tai tu, tri du, tai su

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 sang ma hoa. hieu va ((cac xuc) or (chat xuc)) va hanh ((tai duc) OR (tai du)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ky sang ma hoa. hieu va ((cac xuc) OR (chat xuc)) va hanh ((tai duc) OR (tai du)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach ky sang ma hoa. hieu va ((cac xuc) or (chat xuc)) va hanh ((tai duc) OR (tai du)) tre".
• Adding a wildcard symbol may retrieve word variants: thuoc sach ky sang ma hoa. hieu va ((cac xuc) or (chat xuc)) va hanh ((tai duc) OR (tai du)) tre*.