Perhaps you should try some spelling variations:
doanh bac » doanh bat, doanh ban, doanh bao
toc sach » hoc sach, doc sach, thuoc sach
thuc xay » thuc day, tuc xay, thuat xay
danh bac » danh bat, dan bac, dang bac
cao hoi » cau hoi, co hoi, cao hoc
cua tre » cua te, cuu tre, cua triet
he nam » ha nam, nghe nam
y nang » ky nang, ly nang, v nang
ve nam » va nam, le nam, te nam

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach y nang cao hoi. hieu ((ve nam) or (he nam)) thuc xay ((danh bac) OR (doanh bac)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach y nang cao hoi. hieu ((ve nam) OR (he nam)) thuc xay ((danh bac) OR (doanh bac)) cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach y nang cao hoi. hieu ((ve nam) or (he nam)) thuc xay ((danh bac) OR (doanh bac)) cua tre*".