Perhaps you should try some spelling variations:
sach doanh » sach danh, sach tranh, cac doanh
sach tinh » sach kinh, sac tinh, sach tranh
doanh tri » doanh tren, dinh tri, doanh thu
thu doanh » tri doanh, thu hoach, cho doanh
thu sach » tu sach, thuat sach, thuoc sach
tinh tri » dinh tri, minh tri, chinh tri
toc sach » hoc sach, doc sach, thuoc sach
thu oanh » thuy oanh, thi oanh, thu canh

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 tinh tri ) or ( toc sach doanh tri ))) or ( ((thu doanh) or (thu oanh)) doanh tai ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((( thu sach tinh tri ) OR ( toc sach doanh tri ))) OR ( ((thu doanh) OR (thu oanh)) doanh tai )).
• Adding a wildcard symbol may retrieve word variants: (((( thu sach tinh tri ) or ( toc sach doanh tri ))) or ( ((thu doanh) or (thu oanh)) doanh tai ))*.