Perhaps you should try some spelling variations:
thien van » thi van
thanh van » thanh san, thanh toan, thanh phan
thanh vai » thanh hai, thanh tai, thanh oai
nam duc » nam duoc, pham duc, nam thuc
duc ban » duc tan, duc van, dua ban
te sach » toc sach
ty hang » ly hang, ty xang, thi hang
ty nang » ky nang, ty xang, ly nang
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: te sach ((ty nang) OR (ty hang)) x hoi. thien van nam duc ban ((thanh vai) or (thanh van)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ty nang) OR (ty hang)) x hoi. thien van nam duc ban ((thanh vai) OR (thanh van)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ty nang) OR (ty hang)) x hoi. thien van nam duc ban ((thanh vai) or (thanh van)) cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ((ty nang) OR (ty hang)) x hoi. thien van nam duc ban ((thanh vai) or (thanh van)) cua tre*.