Perhaps you should try some spelling variations:
thien van » thi van
tham thuc » nham thuc, pham thuc, tam thuc
toc sach » hoc sach, doc sach, thuoc sach
van tham » van thanh, van tuan, van chat
danh sai » dung sai, danh dau, hanh san
danh bat » doanh bat, anh bai, dinh ba
sach ky » sac ky, sach y, sach ty
thuc va » thuc vat, thuc dan, thuc day
cua tre » cua te, cuu tre, cua triet
x hoi » xa hoi, o hoi, x ho

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 ky nang x hoi. thien van tham thuc va ((danh sai) OR (danh bat)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ky nang x hoi. thien van tham thuc va ((danh sai) OR (danh bat)) cua tre".
• Adding a wildcard symbol may retrieve word variants: toc sach ky nang x hoi. thien van tham thuc va ((danh sai) OR (danh bat)) cua tre*.