Perhaps you should try some spelling variations:
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu van
hieu va » lieu va, hieu qua
cac xuc » cam xuc, cac nuoc, chat xuc
va hanh » van hanh, va thanh, va danh
doi cua » hoi cua
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky nang x ho. ((hieu ve) OR (hieu va)) cac xuc va hanh ((dai cua) or (doi cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang x ho. ((hieu ve) OR (hieu va)) cac xuc va hanh ((dai cua) OR (doi cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang x ho. ((hieu ve) OR (hieu va)) cac xuc va hanh ((dai cua) or (doi cua)) tre".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang x ho. ((hieu ve) OR (hieu va)) cac xuc va hanh ((dai cua) or (doi cua)) tre*.