Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
tay lang » tai lang, tay tang, tay quang
va nhanh » va thanh, va hanh, va nganh
hieu van » hieu va, thien van, lieu va
van cam » van nam, van lam, van cau
ty hang » ly hang, ty xang, thi hang
va nhan » van nhan, ca nhan, va phan
ha cua » hoa cua, hai cua, nha cua

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 hang) or (tay lang)) xa hoi. hieu van cam xuc ((va nhanh) or (va nhan)) ha cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ((ty hang) OR (tay lang)) xa hoi. hieu van cam xuc ((va nhanh) OR (va nhan)) ha cua vat.
• Adding a wildcard symbol may retrieve word variants: toc sach ((ty hang) or (tay lang)) xa hoi. hieu van cam xuc ((va nhanh) or (va nhan)) ha cua vat*.