Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
thu sach » tu sach, thuat sach, thuoc sach
nang mai » nang ma, nang tai, lang mai
sach ky » sac ky, sach y, sach ty
tai cua » thai cua, tai cuc, tri cua
cua tre » cua te, cuu tre, cua triet
mai hoi » mai khoi, dai hoi, lai hoi
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa
ve cam » ve cham, ve cac, ve cai
va cam » va cham, va cac, va cao

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 mai hoi. hieu ((ve cam) or (va cam)) ((xuc va) OR (tuc va)) thanh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang mai hoi. hieu ((ve cam) OR (va cam)) ((xuc va) OR (tuc va)) thanh tai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky nang mai hoi. hieu ((ve cam) or (va cam)) ((xuc va) OR (tuc va)) thanh tai cua tre".
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang mai hoi. hieu ((ve cam) or (va cam)) ((xuc va) OR (tuc va)) thanh tai cua tre*.