Perhaps you should try some spelling variations:
duc manh » suc manh, duc anh, duc minh
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
hieu tu » chieu tu, hieu tuc, hien tu
tu cham » toc cham, thi cham
xuc van » luc van, xuc ban, thuc van
duc van » duc va, duc tan, duc phan
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa
vi cua » vai cua, di cua

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 nang ma hoi. hieu tu cham ((xuc van) or (((duc van) or (duc manh)))) hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang ma hoi. hieu tu cham ((xuc van) OR (((duc van) OR (duc manh)))) hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang ma hoi. hieu tu cham ((xuc van) or (((duc van) or (duc manh)))) hanh vi cua tre*.