Perhaps you should try some spelling variations:
doanh dan » doanh ban, doanh van, doanh dao
hieu van » hieu va, thien van, lieu va
tay lang » tai lang, tay tang, tay quang
va doanh » van doanh, vay doanh, va danh
hoa lang » hoa dan, hoa van
dan cua » dan ca, ban cua, dai cua
cau toc » cac toc, cao toc, cau hoc
van cau » van dau, van hau, van chat
te sach » toc sach
toc va » hoc va, toc ta, tuc va
o lang » hoi lang
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 ((tay lang) OR (((o lang) OR (hoa lang)))) xa hoi. hieu van cau toc va doanh dan cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((tay lang) or (((o lang) OR (hoa lang)))) xa hoi. hieu van cau toc va doanh dan cua te~".
• Adding a wildcard symbol may retrieve word variants: te sach ((tay lang) or (((o lang) OR (hoa lang)))) xa hoi. hieu van cau toc va doanh dan cua te*.