Perhaps you should try some spelling variations:
danh sai » dung sai, danh bat, danh dau
te sach » toc sach
thu nam » tu nam, thu nhap, thu nhat
dan sai » doan sai, dan tai, dan giai
cua tre » cua te, cuu tre, cua triet
hieu he » hieu ve, hiem he, hieu le
nang xa » lang xa, nang ma, mang xa
he nam » ha nam, nghe nam

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y ((nang xa) OR (nang x)) hoi. hieu he nam thu nam ((dan sai) or (danh sai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((nang xa) OR (nang x)) hoi. hieu he nam thu nam ((dan sai) OR (danh sai)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y ((nang xa) OR (nang x)) hoi. hieu he nam thu nam ((dan sai) or (danh sai)) cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach y ((nang xa) OR (nang x)) hoi. hieu he nam thu nam ((dan sai) or (danh sai)) cua tre*.