Perhaps you should try some spelling variations:
trong thanh » truong thanh, trung thanh, rong thanh
thien van » thi van
thanh tai » thanh hai, thanh toan, doanh tai
luc trong » luoc trong, luu trong, cuc trong
tai cuu » tai cuc, tai buu, tai cua
bao luc » bao thuc
van bao » van ban, van dao
su sach » so sach, vu sach
te sach » toc sach
cuu tre » cua tre, cau tren, cau treo
y nang » ky nang, ly nang, v nang
x hoi » o hoi, x ho, 5 hoi

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (te sach)) y nang ((x hoi) OR (xa hoi)). thien van bao luc trong thanh tai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (te sach)) y nang ((x hoi) OR (xa hoi)). thien van bao luc trong thanh tai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (te sach)) y nang ((x hoi) OR (xa hoi)). thien van bao luc trong thanh tai cuu tre".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (te sach)) y nang ((x hoi) OR (xa hoi)). thien van bao luc trong thanh tai cuu tre*.