Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
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
vai cua » dai cua, hai cua, lai cua
cac lo » cac co, cac bo, cac ho

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 lo) OR (cac lop)) van thanh vai cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang xa hoi. hieu ve ((cac lo) OR (cac lop)) van thanh vai cua triet".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang xa hoi. hieu ve ((cac lo) OR (cac lop)) van thanh vai cua triet*.