Perhaps you should try some spelling variations:
nang cau » nang cao, hang cau, nang dau
vai cua » dai cua, hai cua, lai cua
va danh » va dinh, va dan, va hanh
sach ly » sach y, sach lo, sach hay
sach ty » sach y, sach tu, sach thu
hieu va » lieu va, hieu qua
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, luc va
vi cua » di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ly) or (sach ty)) nang cau hoi. hieu va cam xuc va danh ((vi cua) OR (vai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ly) OR (sach ty)) nang cau hoi. hieu va cam xuc va danh ((vi cua) OR (vai cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ly) or (sach ty)) nang cau hoi. hieu va cam xuc va danh ((vi cua) OR (vai cua)) triet".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ly) or (sach ty)) nang cau hoi. hieu va cam xuc va danh ((vi cua) OR (vai cua)) triet*.