Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
van thanh » ban thanh, van tuan
su sach » so sach, vu sach
tai cua » thai cua, tai cuc, tri cua
cao suc » cao su, cao duc
hieu ve » hieu va, hieu van
ly vang » ly van, ly quang
ly hang » ly quang
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 hang) or (ly vang)) xa hoi. hieu ve ((pham duc) or (cao suc)) van thanh tai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ly hang) OR (ly vang)) xa hoi. hieu ve ((pham duc) OR (cao suc)) van thanh tai cua te.
• Adding a wildcard symbol may retrieve word variants: su sach ((ly hang) or (ly vang)) xa hoi. hieu ve ((pham duc) or (cao suc)) van thanh tai cua te*.