Perhaps you should try some spelling variations:
hanh dieu » han dieu, hinh dieu, hoang dieu
thu sach » tu sach, thuat sach, thuoc sach
dang xay » dang van
va thanh » gia thanh, ban thanh, va tinh
thuy vat » thuc vat, thuy van, thuat vat
vat hanh » vat thanh, van hanh, va hanh
dieu cua » dieu tra
sach ky » sac ky, sach y, sach ty

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

• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky ((dang xay) OR (van xay)) hoi. lieu va thanh thuy vat hanh dieu cua vat~.
• Adding a wildcard symbol may retrieve word variants: thu sach ky ((dang xay) or (van xay)) hoi. lieu va thanh thuy vat hanh dieu cua vat*.