Perhaps you should try some spelling variations:
nang cau » nang cao, hang cau, nang dau
sach nay » sach hay, sach vay, sach nang
va danh » va dinh, va dan, va hanh
lai cua » dai cua, hai cua, lai chau
hieu ve » hieu va, hieu van
cac xuc » cam xuc, cac nuoc, chat xuc
vi cua » vai cua, di cua
ve cac » va cac, vien cac
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: tu ((sach nay) or (sach y)) nang cau hoi. hieu ve cac xuc va danh ((vi cua) or (lai cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach nay) OR (sach y)) nang cau hoi. hieu ve cac xuc va danh ((vi cua) OR (lai cua)) te.
• Adding a wildcard symbol may retrieve word variants: tu ((sach nay) or (sach y)) nang cau hoi. hieu ve cac xuc va danh ((vi cua) or (lai cua)) te*.