Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
va doanh » van doanh, vay doanh, va danh
cham xuc » cam xuc, chat xuc, cham soc
thu sach » thuat sach, thuoc sach, thu hoach
tu sach » su sach, te sach, vu sach
van cua » vang cua, ban cua, dan cua
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
nang ma » tang ma, sang ma, nang cao
tu cach » tu cac
xuc va » duc va, tuc va, luc va
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: ((((tu sach) OR (tu cach))) or (thu sach)) ky nang ma hoi. hieu ve cham xuc va doanh van cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((tu sach) OR (tu cach))) OR (thu sach)) ky nang ma hoi. hieu ve cham xuc va doanh van cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((tu sach) OR (tu cach))) or (thu sach)) ky nang ma hoi. hieu ve cham xuc va doanh van cua tre".
• Adding a wildcard symbol may retrieve word variants: ((((tu sach) OR (tu cach))) or (thu sach)) ky nang ma hoi. hieu ve cham xuc va doanh van cua tre*.