Perhaps you should try some spelling variations:
doanh dao » doanh bao, doanh cao, doanh giao
va doanh » van doanh, vay doanh, va danh
hieu van » hieu va, thien van, lieu va
cac thoi » cac hop, cac tro, cac thu
te sach » toc sach
ky dang » ky nang, ky danh
dang ca » dang cac, dan ca, hang ca
ca phoi » cap phoi, cay phoi, gap phoi
cac toc » cac nuoc
sach ky » sac ky, sach y, sach ty
dao cua » dai cua, day cua, dan cua
cua te » cua tu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky dang ca phoi. hieu van ((((cac toc) OR (cac toi))) OR (cac thoi)) va doanh dao cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky dang ca phoi. hieu van ((((cac toc) OR (cac toi))) or (cac thoi)) va doanh dao cua te~".
• Adding a wildcard symbol may retrieve word variants: te sach ky dang ca phoi. hieu van ((((cac toc) OR (cac toi))) or (cac thoi)) va doanh dao cua te*.