Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
va thanh » gia thanh, ban thanh, va tinh
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, nang cao, mang may
sang ma » tang ma, sang tao, mang may
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
cam duc » cam xuc, cao duc, pham duc
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
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: tu sach ky ((((nang ma) OR (sang ma))) or (lang xa)) hoi. hieu va cam duc va thanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((((nang ma) OR (sang ma))) OR (lang xa)) hoi. hieu va cam duc va thanh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky ((((nang ma) OR (sang ma))) or (lang xa)) hoi. hieu va cam duc va thanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ky ((((nang ma) OR (sang ma))) or (lang xa)) hoi. hieu va cam duc va thanh vai cua tre*.