Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
so sach » so sanh, bo sach, co sach
tai cua » thai cua, tai cuc, tri cua
thuc va » thuc dan, thuc day
truc va » trung va
sach tu » sach thu, cach tu, sach ty
hieu he » hieu ve, hiem he, hieu le
dang xa » dang xay, lang xa, dang ha
tu dang » thu dang, tu dong, su dang
cua tre » cua te, cuu tre, cua triet
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: so sach tu dang xa hoi. hieu he nam ((((truc va) OR (thuc vat))) or (thuc va)) thanh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach tu dang xa hoi. hieu he nam ((((truc va) OR (thuc vat))) OR (thuc va)) thanh tai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach tu dang xa hoi. hieu he nam ((((truc va) OR (thuc vat))) or (thuc va)) thanh tai cua tre".
• Adding a wildcard symbol may retrieve word variants: so sach tu dang xa hoi. hieu he nam ((((truc va) OR (thuc vat))) or (thuc va)) thanh tai cua tre*.