Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
toc sach » hoc sach, doc sach, thuoc sach
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, ban thanh, va tinh
sach yu » sach y, sach tu, sach uu
yu hang » yu zhang, yu pang, yu wang
cua hoi » cua moi
van bac » van ban, van bao, van hac
vai cua » dai cua, hai cua, lai cua
cua tuc » cua duc, cua tu, cua thuoc
ca hoi » cau hoi, xa hoi, co hoi
bac du » cac du, bac tu, tac du
du va » dau va, tu va, su va

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 yu hang ((ca hoi) OR (cua hoi)). hieu van bac du va thanh vai cua tuc~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach yu hang ((ca hoi) OR (cua hoi)). hieu van bac du va thanh vai cua tuc".
• Adding a wildcard symbol may retrieve word variants: toc sach yu hang ((ca hoi) OR (cua hoi)). hieu van bac du va thanh vai cua tuc*.