Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
hieu van » hieu va, thien van, lieu va
thai cua » than cua, tai cuc, dai cua
sach ky » sac ky, sach y, sach ty
nang xa » lang xa, nang ma, mang xa
van cam » van nam, van lam, van cau
xuc va » duc va, tuc va, luc va
va dan » ca dan, va dao, va dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach ky ((nang xa) or (nang x)) hoi. hieu van cam xuc va dan ((thai cua) OR (tri cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ky ((nang xa) OR (nang x)) hoi. hieu van cam xuc va dan ((thai cua) OR (tri cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach ky ((nang xa) or (nang x)) hoi. hieu van cam xuc va dan ((thai cua) OR (tri cua)) te".
• Adding a wildcard symbol may retrieve word variants: thuoc sach ky ((nang xa) or (nang x)) hoi. hieu van cam xuc va dan ((thai cua) OR (tri cua)) te*.