Perhaps you should try some spelling variations:
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
cac xuc » cam xuc, cac nuoc, chat xuc
va hanh » van hanh, va thanh, ban hanh
va danh » va dinh, va dan, dia danh
doi cua » dai cua, hoi cua
ve cac » va cac, vien cac
di cua » dai cua, de cua, do cua

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 cac xuc ((va hanh) OR (va danh)) ((di 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 cac xuc ((va hanh) OR (va danh)) ((di 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 cac xuc ((va hanh) OR (va danh)) ((di cua) or (doi cua)) tre".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang x ho. hieu ve cac xuc ((va hanh) OR (va danh)) ((di cua) or (doi cua)) tre*.