Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh va » thanh van, hanh va, thanh ha
ve triet » va trien, su triet
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cam tuc » cam xuc, cam tu, nam thuc
su tien » su kien, su hien, tu tieng

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ky nang xa hoi. hieu ve ((cam tuc) or (am thuc)) ban thanh va ((su tien) or (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky nang xa hoi. hieu ve ((cam tuc) OR (am thuc)) ban thanh va ((su tien) OR (ve triet)).
• Adding a wildcard symbol may retrieve word variants: so sach ky nang xa hoi. hieu ve ((cam tuc) or (am thuc)) ban thanh va ((su tien) or (ve triet))*.