Perhaps you should try some spelling variations:
doc sach » hoc sach, toc sach, nuoc sach
danh tai » doanh tai, dinh tai, hanh tai
tai cua » thai cua, tai cuc, tri cua
va danh » va dinh, va dan, va hanh
van cau » van dau, van hau, van chat
van cam » van nam, van lam, van dam
nang xa » lang xa, nang ma, mang xa
sach ty » sach y, sach tu, sach thu
xuc va » duc va, tuc va, luc va
cua te » cua tu

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

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