Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
van thanh » ban thanh, van tuan
su sach » vu sach
cam duc » cam xuc, cao duc, pham duc
hieu ve » hieu va, hieu van
vang xa » lang xa, mang xa, ang xa
ly vang » ly hang, ly van, ly quang
so sach » so sanh, bo sach, co sach
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (so sach)) ly vang xa hoi. hieu ve ((cam duc) or (giao duc)) van thanh dai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ly vang xa hoi. hieu ve ((cam duc) OR (giao duc)) van thanh dai cua te.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) ly vang xa hoi. hieu ve ((cam duc) or (giao duc)) van thanh dai cua te*.