Perhaps you should try some spelling variations:
thuc day » thuc dan, thuc vat
diem cau » dieu can
day hang » dat hang, dai hang, day nang
toc sach » hoc sach, doc sach, thuoc sach
nam thuc » nam thuoc, am thuc, nam thu
hieu he » hieu ve, hiem he, hieu le
nang xa » nang x, lang xa, nang ma
co sach » bo sach, cuon sach, hoc sach
he nam » ha nam, nghe nam
di cau » da cau

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) or (co sach)) ky nang xa hoi. hieu he nam thuc day hang ((di cau) or (diem cau)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (co sach)) ky nang xa hoi. hieu he nam thuc day hang ((di cau) OR (diem cau)) triet.
• Adding a wildcard symbol may retrieve word variants: ((toc sach) or (co sach)) ky nang xa hoi. hieu he nam thuc day hang ((di cau) or (diem cau)) triet*.