Perhaps you should try some spelling variations:
su sach » so sach, vu sach
hieu ve » hieu va, hieu van
cac xuc » cam xuc, cac nuoc, chat xuc
va hanh » van hanh, va thanh, va danh
y nang » ly nang, v nang, may nang
ve cac » va cac, vien cac
xuc va » duc va, tuc va, luc va
di cua » doi 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 ((y nang) OR (ky nang)) x ho. hieu ve cac xuc va hanh ((di cua) or (dai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((y nang) OR (ky nang)) x ho. hieu ve cac xuc va hanh ((di cua) OR (dai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((y nang) OR (ky nang)) x ho. hieu ve cac xuc va hanh ((di cua) or (dai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: su sach ((y nang) OR (ky nang)) x ho. hieu ve cac xuc va hanh ((di cua) or (dai cua)) tre*.