Perhaps you should try some spelling variations:
ban hanh » ban hang
ve triet » va trien, su triet
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
thi ban » thi lan, tai ban, tri ban
hanh ve » hanh vi, hanh va, hanh kem
ve ve » de ve, va ve, ke ve
hien » bien, tien, dien

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 ((vien dai) OR (hien dai)) thi ban hanh ve ve triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang xa hoi. hieu ((vien dai) OR (hien dai)) thi ban hanh ve ve triet".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. hieu ((vien dai) OR (hien dai)) thi ban hanh ve ve triet*.