Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
lai cua » dai cua, hai cua, lai chau
vai cua » dai cua, hai cua, bai cua
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
va cham » va chat, va tham
sach ty » sach y, sach tu, sach thu
ve cam » ve cham, ve cac, va cam
xang x » nang x
x hoi » xa hoi, o hoi, x ho

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 ty xang x hoi. hieu ((ve cam) or (va cham)) thuc va hanh ((vai cua) OR (lai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty xang x hoi. hieu ((ve cam) OR (va cham)) thuc va hanh ((vai cua) OR (lai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty xang x hoi. hieu ((ve cam) or (va cham)) thuc va hanh ((vai cua) OR (lai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ty xang x hoi. hieu ((ve cam) or (va cham)) thuc va hanh ((vai cua) OR (lai cua)) tre*.