Perhaps you should try some spelling variations:
dang loai » dan loai, dang hoai, dang loi
thu sach » tu sach, thuat sach, thuoc sach
thuc dan » thuc hanh, hoc dan, thuc vat
thuc day » thuc vat
sach ty » sach y, sach tu, sach thu
xang xa » lang xa, mang xa, ang xa
hieu ve » hieu va, hieu van
loai va » loai nam
ve nam » he nam, va nam, le nam
va tre » va trien

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ty xang xa hoi. hieu ve nam ((thuc dan) or (thuc day)) dang loai va tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty xang xa hoi. hieu ve nam ((thuc dan) OR (thuc day)) dang loai va tre.
• Adding a wildcard symbol may retrieve word variants: thu sach ty xang xa hoi. hieu ve nam ((thuc dan) or (thuc day)) dang loai va tre*.