Perhaps you should try some spelling variations:
thanh vang » thanh van, thanh hang, thanh hoang
van thanh » ban thanh, van tuan
vang cua » mang cua, hang cua, tang cua
nam duoc » nam thuoc, da duoc, dat duoc
su sach » so sach, vu sach
cao duc » dao duc, cao suc, giao duc
ly mang » ly hang, ly vang, ly quang
ly nang » ky nang, ly hang, ly vang
hieu ve » hieu va, hieu van
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 ((ly mang) OR (ly nang)) xa hoi. hieu ve ((nam duoc) or (cao duc)) van thanh vang cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ly mang) OR (ly nang)) xa hoi. hieu ve ((nam duoc) OR (cao duc)) van thanh vang cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ly mang) OR (ly nang)) xa hoi. hieu ve ((nam duoc) or (cao duc)) van thanh vang cua te".
• Adding a wildcard symbol may retrieve word variants: su sach ((ly mang) OR (ly nang)) xa hoi. hieu ve ((nam duoc) or (cao duc)) van thanh vang cua te*.