Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
van doanh » toan doanh, van dong, van thanh
te sach » toc sach
van cua » vang cua, ban cua, dan cua
suc van » su van, duc van, luc van
cao suc » cao su, cao duc
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va
ty hang » ly hang, ty xang, thi hang
ty nang » ky nang, ty xang, ly nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((ty nang) OR (ty hang)) xa hoi. ((hieu va) or (hieu qua)) cao suc van doanh van cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ty nang) OR (ty hang)) xa hoi. ((hieu va) OR (hieu qua)) cao suc van doanh van cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ty nang) OR (ty hang)) xa hoi. ((hieu va) or (hieu qua)) cao suc van doanh van cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ((ty nang) OR (ty hang)) xa hoi. ((hieu va) or (hieu qua)) cao suc van doanh van cua tre*.