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