Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
sach thu » sach thue, sach thieu, sach tham
va cham » va chat, va tham
vai cuu » vai cua
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
cuu tre » cua tre, cau tren, cau treo
sach ty » sach y, sach tu, xach tay
xang x » nang x
ve cac » va cac, vien cac

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