Perhaps you should try some spelling variations:
xa thanh » va thanh, ha thanh, ta thanh
thanh vi » hanh vi, thanh va, thanh ve
su triet » su viet, ve triet
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
cac tac » cac toc, cac bac, cac dac
su tien » su kien, su hien, tu tieng
ve cac » va cac, vien cac
tac xa » tuc xa, tac da
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 ky nang x hoi. hieu ve cac tac xa thanh vi ((su triet) OR (su tien))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang x hoi. hieu ve cac tac xa thanh vi ((su triet) OR (su tien))".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang x hoi. hieu ve cac tac xa thanh vi ((su triet) OR (su tien))*.