Perhaps you should try some spelling variations:
nang thai » nang tai, dang thai, lang thai
thu sach » tu sach, thuat sach, thuoc sach
thai cua » than cua, tai cuc, tri cua
sach ky » sac ky, sach y, sach ty
van bac » van bao, van hac, dan bac
va nang » van nang, da nang, cam nang
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ky nang x ho. thien ((van bac) OR (van ban)) nuoc va nang thai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky nang x ho. thien ((van bac) OR (van ban)) nuoc va nang thai cua tre".
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang x ho. thien ((van bac) OR (van ban)) nuoc va nang thai cua tre*.