Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
ky canh » ky anh, ky cach, ky hanh
ky danh » ky anh, ky dang
cuu tre » cua tre, cau tren, cau treo
va cam » va cham, va cac, va cao
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa
vi cuu » vi luu, vinh cuu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ((ky canh) or (ky danh)) xa hoi. lieu va cam ((xuc va) or (tuc va)) hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((ky canh) OR (ky danh)) xa hoi. lieu va cam ((xuc va) OR (tuc va)) hanh vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: thu sach ((ky canh) or (ky danh)) xa hoi. lieu va cam ((xuc va) or (tuc va)) hanh vi cuu tre*.