Perhaps you should try some spelling variations:
qua cham » qua hai, qua cac, va cham
duc manh » suc manh, duc anh, duc minh
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
xuc van » duc van, luc van, thuc van
xuc ban » duc ban, cuc ban, quoc ban
cuu tre » cua tre, cau tren, cau treo
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: tu sach ky lang xa hoi. hieu qua cham ((((xuc van) or (xuc ban))) or (duc manh)) hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky lang xa hoi. hieu qua cham ((((xuc van) OR (xuc ban))) OR (duc manh)) hanh vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky lang xa hoi. hieu qua cham ((((xuc van) or (xuc ban))) or (duc manh)) hanh vi cuu tre*.