Perhaps you should try some spelling variations:
tham thuc » nham thuc, pham thuc, tam thuc
thu sach » tu sach, thuat sach, thuoc sach
toc sach » hoc sach, doc sach, thuoc sach
ky danh » ky anh, ky dang
danh xa » danh ca, dinh xa, canh xa
va tham » van tham, va cham, va thanh
thuc va » thuc vat, thuc dan, thuc day
han tai » hang tai, nhan tai, van tai
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
va han » va phan, van han, va hanh

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) or (toc sach)) ky danh xa hoi. lieu va tham thuc va han tai ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (toc sach)) ky danh xa hoi. lieu va tham thuc va han tai ((cua tre) OR (cuu tre))*.