Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
ban thanh » ban hanh, ban hang
tu sach » thu sach, su sach, te sach
van cua » vang cua, ban cua, dan cua
cua tre » cua te, cuu tre, cua triet
hai hoa » thai hoa, dai hoa, lai hoa
ky dang » ky danh
ca dua » cay dua, ca cua, ca lua
ca da » ca dao, ca dan, ca dam

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ((ky dang) OR (ky nang)) hai hoa. lieu va ((ca dua) or (ca da)) ban thanh van cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ky dang) OR (ky nang)) hai hoa. lieu va ((ca dua) OR (ca da)) ban thanh van cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ky dang) OR (ky nang)) hai hoa. lieu va ((ca dua) or (ca da)) ban thanh van cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ky dang) OR (ky nang)) hai hoa. lieu va ((ca dua) or (ca da)) ban thanh van cua tre*.