Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
doanh bat » danh bat, doanh tai, doanh va
va doanh » van doanh, vay doanh, va danh
hieu ve » hieu va, hieu van
bat cua » ban cua, mat cua, bai cua
cac luc » cau luc, coc luc, cac nuoc
tu cach » tu cac
ky dang » ky danh
cua tre » cua te, cuu tre, cua triet
ve cac » va cac, vien cac
luc va » duc va, tuc va, loc 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 cach) or (thuoc sach)) ((ky nang) or (ky dang)) xa hoi. hieu ve cac luc va doanh bat cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (thuoc sach)) ((ky nang) OR (ky dang)) xa hoi. hieu ve cac luc va doanh bat cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (thuoc sach)) ((ky nang) or (ky dang)) xa hoi. hieu ve cac luc va doanh bat cua tre*.