Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
sach ty » sach y, sach thu, xach tay
vai cuu » vai cua
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
va tham » van tham, va cham, va thanh
cuu tre » cua tre, cau tren, cau treo
sach tu » sach thu, cach tu, sach uu
xang x » nang x
ve cam » ve cham, ve cac, va cam
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: su ((sach ty) OR (sach tu)) xang x hoi. hieu ((ve cam) or (va tham)) thuc va hanh vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ty) OR (sach tu)) xang x hoi. hieu ((ve cam) OR (va tham)) thuc va hanh vai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach ty) OR (sach tu)) xang x hoi. hieu ((ve cam) or (va tham)) thuc va hanh vai cuu tre".
• Adding a wildcard symbol may retrieve word variants: su ((sach ty) OR (sach tu)) xang x hoi. hieu ((ve cam) or (va tham)) thuc va hanh vai cuu tre*.