Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
van thanh » ban thanh, van tuan
cua triet » cua viet, su triet, va triet
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cac lop » cac hop, cac loai
hai cua » thai cua, dai cua, hoi cua
cac co » cac cong

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang xa hoi. hieu ve ((cac co) or (cac lop)) van thanh hai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang xa hoi. hieu ve ((cac co) OR (cac lop)) van thanh hai cua triet.
• Adding a wildcard symbol may retrieve word variants: te sach ky nang xa hoi. hieu ve ((cac co) or (cac lop)) van thanh hai cua triet*.