Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
toc sach » hoc sach, doc sach, thuoc sach
xa thanh » va thanh, ha thanh, ta thanh
tai cua » thai cua, tai cuc, tri cua
xu lang » cu lang, xu dang, xu quang
tu lang » cu lang, tu lanh, tu quang
cua tre » cua te, cuu tre, cua triet

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 ((tu lang) or (xu lang)) xa hoi. hieu ((va co) or (vo co)) tuc xa thanh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ((tu lang) OR (xu lang)) xa hoi. hieu ((va co) OR (vo co)) tuc xa thanh tai cua tre.
• Adding a wildcard symbol may retrieve word variants: toc sach ((tu lang) or (xu lang)) xa hoi. hieu ((va co) or (vo co)) tuc xa thanh tai cua tre*.