Perhaps you should try some spelling variations:
thien van » thi van
thu sach » tu sach, thuat sach, thuoc sach
ban benh » ba benh, ban banh, can benh
san benh » sau benh, tai benh, so benh
te sach » toc sach
van cam » van nam, van lam, van cau
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
lo cua » lon cua, le cua, ly cua
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: ((thu sach) or (te sach)) y nang x hoi. thien van cam xuc ((ban benh) OR (san benh)) lo cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (te sach)) y nang x hoi. thien van cam xuc ((ban benh) OR (san benh)) lo cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) or (te sach)) y nang x hoi. thien van cam xuc ((ban benh) OR (san benh)) lo cua tre*".