Perhaps you should try some spelling variations:
dang xay » dang van, van xay
cac thuc » cach thuc, cac thu, can thuc
vat danh » va danh, van danh, luat danh
so sach » so sanh, bo sach, co sach
nang ma » tang ma, sang ma, nang cao
danh di » danh du, xanh di, danh dien
cua tre » cua te, cuu tre, cua triet
di cua » dai cua, doi cua, de cua

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 y ((dang xay) or (nang ma)) hoi. lieu va cac thuc vat danh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y ((dang xay) OR (nang ma)) hoi. lieu va cac thuc vat danh di cua tre.
• Adding a wildcard symbol may retrieve word variants: so sach y ((dang xay) or (nang ma)) hoi. lieu va cac thuc vat danh di cua tre*.