Perhaps you should try some spelling variations:
doanh co » doanh cua, doanh va, anh co
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
danh co » danh cho, anh co, danh ca
cua tre » cua te, cuu tre, cua triet
ve cac » va cac, vien cac
xuc va » tuc va, luc va, xac va

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky nang x ho. hieu ve cac ((xuc va) or (duc va)) ((danh co) OR (doanh co)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang x ho. hieu ve cac ((xuc va) OR (duc va)) ((danh co) OR (doanh co)) cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang x ho. hieu ve cac ((xuc va) or (duc va)) ((danh co) OR (doanh co)) cua tre*".