Perhaps you should try some spelling variations:
nang xuan » nang quan, dang xuan, lang xuan
nang xay » dang xay, nganh xay, nang cao
lanh hai » manh hai, thanh hai, lang chai
ban lanh » ban hanh, ban linh, ban anh
tu sach » thu sach, su sach, te sach
hai cua » thai cua, dai cua, hoi cua
duc ban » duc tan, duc van, dua ban
cua tre » cua te, cuu tre, cua triet
sach ky » sac ky, sach y, sach ty
ve cac » va cac, vien cac
ve cam » ve cham, va cam, ve cai

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 xay) OR (nang xuan)) phoi. hieu ((ve cam) or (ve cac)) duc ban lanh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((nang xay) OR (nang xuan)) phoi. hieu ((ve cam) OR (ve cac)) duc ban lanh hai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky ((nang xay) OR (nang xuan)) phoi. hieu ((ve cam) or (ve cac)) duc ban lanh hai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ky ((nang xay) OR (nang xuan)) phoi. hieu ((ve cam) or (ve cac)) duc ban lanh hai cua tre*.