Perhaps you should try some spelling variations:
doanh dan » doanh ban, doanh van, doanh dao
hieu van » hieu va, thien van, lieu va
thuc va » thuc vat, thuc dan, thuc day
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
van cac » van hac, van cau, van bac
dan cua » dan ca, ban cua, dai cua
te sai » te tai, te bai, te lai
cua tu » cua tuc, cua su, cua cu
tuc va » truc va, tuc xa, duc va
sai ky » sac ky
toc va » hoc va, toc ta, loc va

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 sai ky lang xa hoi. hieu van cac ((toc va) OR (((tuc va) OR (thuc va)))) doanh dan cua tu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sai ky lang xa hoi. hieu van cac ((toc va) or (((tuc va) OR (thuc va)))) doanh dan cua tu~".
• Adding a wildcard symbol may retrieve word variants: te sai ky lang xa hoi. hieu van cac ((toc va) or (((tuc va) OR (thuc va)))) doanh dan cua tu*.