Perhaps you should try some spelling variations:
doanh van » doan van, doanh ban, doanh nhan
doanh va » doan va, doanh tai, doanh cua
cham xuc » cam xuc, chat xuc, cham soc
tu sach » thu sach, su sach, tu cach
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
xay hoi » xa hoi, tay hoi, cay phoi
te sach » toc sach
xuc va » duc va, tuc va, luc va
ky van » ly van, ty van, ky va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (te sach)) ky van xay hoi. hieu ve cham xuc va ((doanh van) OR (doanh va)) hoa viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ky van xay hoi. hieu ve cham xuc va ((doanh van) OR (doanh va)) hoa viet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (te sach)) ky van xay hoi. hieu ve cham xuc va ((doanh van) OR (doanh va)) hoa viet*".