Perhaps you should try some spelling variations:
thanh vi » hanh vi, thanh va, thanh ve
dang xay » dang van, van xay
va thanh » gia thanh, ban thanh, va tinh
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
va tham » van tham, va thuat
va cham » va chat
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc va
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: su sach ky ((dang xay) or (nang x)) hoi. hieu ((va cham) OR (va tham)) xuc va thanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((dang xay) OR (nang x)) hoi. hieu ((va cham) OR (va tham)) xuc va thanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky ((dang xay) or (nang x)) hoi. hieu ((va cham) OR (va tham)) xuc va thanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach ky ((dang xay) or (nang x)) hoi. hieu ((va cham) OR (va tham)) xuc va thanh vi cua tre*.