Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, va tinh, le thanh
va triet » va thiet, va trien, ve triet
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
van cam » van nam, van lam, van cau
va hanh » van hanh, va danh, ban hanh
vi va » vi van, vai va, vu va

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 ky nang xa hoi. hieu van cam xuc ((va hanh) OR (((va thanh) OR (ban thanh)))) vi va triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang xa hoi. hieu van cam xuc ((va hanh) OR (((va thanh) OR (ban thanh)))) vi va triet".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. hieu van cam xuc ((va hanh) OR (((va thanh) OR (ban thanh)))) vi va triet*.