Perhaps you should try some spelling variations:
van doanh » toan doanh, van dong, van thanh
doanh van » doan van, doanh va, doanh ban
te sach » toc sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va
cao suc » cao su, cao duc
suc van » su van, duc van, luc van
van cua » vang cua, ban cua, dan cua
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa

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 ma 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 ma 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 ma hoi. ((hieu va) or (hieu qua)) cao suc van doanh van cua tre*.