Perhaps you should try some spelling variations:
su triet » su viet, ve triet
thanh vi » hanh vi, thanh va, thanh ve
xa thanh » va thanh, ha thanh, ta thanh
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
cac dac » cac dan, cac dai, cac bac
su tien » su kien, su hien, tu tieng
cac tai » cao tai, cac bai, cac dai
hieu ve » hieu va, hieu van
ty nang » ky nang, ty xang, ty hang
x hoi » xa hoi, o hoi, x ho

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 ty nang x hoi. hieu ve ((cac tai) or (cac dac)) xa thanh vi ((su triet) OR (su tien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang x hoi. hieu ve ((cac tai) OR (cac dac)) xa thanh vi ((su triet) OR (su tien))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty nang x hoi. hieu ve ((cac tai) or (cac dac)) xa thanh vi ((su triet) OR (su tien))*".