Perhaps you should try some spelling variations:
sach hay » sach han, sach ha, sach nay
va thanh » gia thanh, ban thanh, va tinh
nang cau » nang cao, hang cau, nang dau
lai cua » dai cua, hai cua, lai chau
va hanh » van hanh, va danh, ban hanh
cac xuc » cam xuc, cac nuoc, chat xuc
hieu ve » hieu va, hieu van
ve cac » va cac, vien cac
cua te » cua tu

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 hay) or (sach y)) nang cau hoi. hieu ve cac xuc ((va hanh) OR (va thanh)) lai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach hay) OR (sach y)) nang cau hoi. hieu ve cac xuc ((va hanh) OR (va thanh)) lai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach hay) or (sach y)) nang cau hoi. hieu ve cac xuc ((va hanh) OR (va thanh)) lai cua te".
• Adding a wildcard symbol may retrieve word variants: tu ((sach hay) or (sach y)) nang cau hoi. hieu ve cac xuc ((va hanh) OR (va thanh)) lai cua te*.