Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
tu sach » thu sach, su sach, tu cach
tai cuu » tai cuc, tai buu, tai cua
duc van » duc va, duc tan, duc manh
duc ban » duc tan, dua ban, duc man
cuu tre » cua tre, cau tren, cau treo
hieu ve » hieu va, hieu van
te sach » toc sach
ve cam » ve cham, ve cac, va cam
x hoi » xa hoi, o hoi, x ho

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ky nang x hoi. hieu ve cam ((duc ban) OR (duc van)) thanh tai cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (te sach)) ky nang x hoi. hieu ve cam ((duc ban) OR (duc van)) thanh tai cuu tre~".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) ky nang x hoi. hieu ve cam ((duc ban) OR (duc van)) thanh tai cuu tre*.