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
danh sai » dung sai, danh dau, hanh san
van tham » van thanh, van tuan, van chat
danh bat » doanh bat, anh bai, dinh ba
cua tre » cuu tre, cua triet, dua tren
sach ky » sac ky, sach y, sach ty
thuc va » thuc vat, thuc dan, thuc day
cua te » cua tu
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) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky nang x hoi. thien van tham thuc va ((danh sai) OR (danh bat)) ((cua tre) OR (cua te)).
• 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) OR (cua te))".
• 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) OR (cua te))*.