Perhaps you should try some spelling variations:
thien van » thi van
tham truc » tham thuc, nham thuc, pham thuc
toc sach » hoc sach, doc sach, thuoc sach
van tham » van thanh, van tuan, van chat
danh sai » dung sai, danh bat, hanh san
danh dau » lanh dao, hang dau, danh tu
sach ky » sac ky, sach y, sach ty
truc va » thuc va, thuc vat, trung va
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 truc va ((danh sai) or (danh dau)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky nang x hoi. thien van tham truc va ((danh sai) OR (danh dau)) cua tre.
• Adding a wildcard symbol may retrieve word variants: toc sach ky nang x hoi. thien van tham truc va ((danh sai) or (danh dau)) cua tre*.