Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
cac quoc » cac nuoc, cac cuoc, cao quoc
su triet » su viet, su tien
ve triet » va trien
te sach » toc sach
ty hang » ly hang, ty xang, thi hang
hieu ve » hieu va, hieu van
ve cac » va cac, vien cac
x hoi » xa hoi, o hoi, x ho
gia » giao

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((ty hang) or (ky nang)) x hoi. hieu ve cac quoc gia thanh vai ((su triet) or (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ty hang) OR (ky nang)) x hoi. hieu ve cac quoc gia thanh vai ((su triet) OR (ve triet)).
• Adding a wildcard symbol may retrieve word variants: te sach ((ty hang) or (ky nang)) x hoi. hieu ve cac quoc gia thanh vai ((su triet) or (ve triet))*.