Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
tang vanm » dang van, tan van, lang van
thu sach » tu sach, thuat sach, thuoc sach
tang van » dang van, hoang van, trong van
va thanh » gia thanh, ban thanh, va tinh
va tham » van tham, va thuat
va cham » va chat
sach ky » sac ky, sach y, sach ty
cuc tre » duc tre, cua tre, cuu tre

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 ((tang van) or (tang vanm)) hoi. hieu ((va cham) OR (va tham)) duc va thanh tai cuc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky ((tang van) OR (tang vanm)) hoi. hieu ((va cham) OR (va tham)) duc va thanh tai cuc tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky ((tang van) or (tang vanm)) hoi. hieu ((va cham) OR (va tham)) duc va thanh tai cuc tre".
• Adding a wildcard symbol may retrieve word variants: thu sach ky ((tang van) or (tang vanm)) hoi. hieu ((va cham) OR (va tham)) duc va thanh tai cuc tre*.