Perhaps you should try some spelling variations:
sach thu » sach thue, sach thieu, sach tham
dang xay » dang van, van xay
hieu van » hieu va, thien van, lieu va
nam thuc » nam thuoc, am thuc, nam thu
vat danh » va danh, van danh, luat danh
xay hoi » xa hoi, tay hoi, cay phoi
danh ca » dan ca, doanh cua, danh cho
cua tre » cua te, cuu tre, cua triet
ca cua » co cua

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 y) or (sach thu)) dang xay hoi. hieu van nam thuc vat danh ca cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((sach y) OR (sach thu)) dang xay hoi. hieu van nam thuc vat danh ca cua tre.
• Adding a wildcard symbol may retrieve word variants: toc ((sach y) or (sach thu)) dang xay hoi. hieu van nam thuc vat danh ca cua tre*.