Perhaps you should try some spelling variations:
van doanh » toan doanh, van dong, van thanh
hieu van » hieu va, thien van, lieu va
van doan » van toan, van hoan, van dan
sach ty » sach tu, sach thu, xach tay
nam xuc » cam xuc, nam xua, nam thuc
via cua » gia cua, gian cua, giau cua
cua tu » cua tuc, cua su, cua cu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc ((sach ty) OR (sach y)) nang x hoi. hieu van nam xuc ((van doan) or (van doanh)) via cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc ((sach ty) OR (sach y)) nang x hoi. hieu van nam xuc ((van doan) OR (van doanh)) via cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc ((sach ty) OR (sach y)) nang x hoi. hieu van nam xuc ((van doan) or (van doanh)) via cua tu".
• Adding a wildcard symbol may retrieve word variants: thuoc ((sach ty) OR (sach y)) nang x hoi. hieu van nam xuc ((van doan) or (van doanh)) via cua tu*.