Perhaps you should try some spelling variations:
thien van » thi van
toc sach » hoc sach, doc sach, thuoc sach
cau tren » cu tren, dau tren, ca tren
tang xa » trang xa, tang ma, lang xa
ty tang » tay tang, ty xang, ty hang
van cau » van dau, van hau, van chat
cau xuc » cam xuc, cau luc, cau truc
sach ty » sach y, sach tu, sach thu
cua tre » cua te, cuu tre, cua triet
va dao » ca dao
va dan » ca dan, va dau, va dap

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 ty tang xa hoi. thien van cau xuc ((va dan) or (va dao)) vai ((cua tre) or (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ty tang xa hoi. thien van cau xuc ((va dan) OR (va dao)) vai ((cua tre) OR (cau tren)).
• Adding a wildcard symbol may retrieve word variants: toc sach ty tang xa hoi. thien van cau xuc ((va dan) or (va dao)) vai ((cua tre) or (cau tren))*.