Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
thuc va » thuc vat, thuc dan, thuc day
sach ky » sac ky, sach y, sach ty
cuu tre » cua tre, cau tren, cau treo
hieu ve » hieu va, hieu van
sang ma » tang ma, nang ma, sang tao
ky sang » ky nang, ky dang, ky tang
ve cam » ve cham, ve cac, va cam
ma hoi » mai hoi, xa hoi, ma hoa
xac va » tac va, ac va, bac va
vi cuu » vi luu, vinh cuu
xuc va » duc va, tuc va, luc va

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 sang ma hoi. hieu ve cam ((((xuc va) or (xac va))) or (thuc va)) hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky sang ma hoi. hieu ve cam ((((xuc va) OR (xac va))) OR (thuc va)) hanh vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: thu sach ky sang ma hoi. hieu ve cam ((((xuc va) or (xac va))) or (thuc va)) hanh vi cuu tre*.