Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
sach dao » lanh dao
va thanh » gia thanh, ban thanh, va tinh
vai cua » dai cua, hai cua, lai cua
sach lo » sach doi, sach hoi, sach moi
va cao » va cac, va dao, va bao
cua te » cua tu
va co » vo co
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((sach lo) OR (sach dao)) nang x hoi. hieu ((va cao) or (va co)) duc va thanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach lo) OR (sach dao)) nang x hoi. hieu ((va cao) OR (va co)) duc va thanh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach lo) OR (sach dao)) nang x hoi. hieu ((va cao) or (va co)) duc va thanh vai cua te".
• Adding a wildcard symbol may retrieve word variants: thu ((sach lo) OR (sach dao)) nang x hoi. hieu ((va cao) or (va co)) duc va thanh vai cua te*.