Perhaps you should try some spelling variations:
danh doanh » doanh doanh, hanh doanh, kinh doanh
toc sach » hoc sach, doc sach, thuoc sach
dang xay » dang van, van xay
suc danh » suc manh, suc canh, sach danh
nang xa » nang x, lang xa, nang ma
tai cua » thai cua, tai cuc, tri cua
ve cac » va cac, vien cac
ve cam » ve cham, va cam, ve cai
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: toc sach y ((nang xa) or (dang xay)) hoi. hieu ((ve cam) OR (ve cac)) suc danh doanh tai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach y ((nang xa) OR (dang xay)) hoi. hieu ((ve cam) OR (ve cac)) suc danh doanh tai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach y ((nang xa) or (dang xay)) hoi. hieu ((ve cam) OR (ve cac)) suc danh doanh tai cua te".
• Adding a wildcard symbol may retrieve word variants: toc sach y ((nang xa) or (dang xay)) hoi. hieu ((ve cam) OR (ve cac)) suc danh doanh tai cua te*.