Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
tan thanh » tran thanh, tang thanh, toan thanh
thanh vai » thanh hai, thanh van, thanh tai
su triet » su viet, su tien, ve triet
vien cac » vien bach, vien dai, vien da
ve cac » va cac
sac ky » cac ky, sai ky
su sac » su sach, su cac, su xac
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 sac ky nang x hoi. hieu ((ve cac) or (vien cac)) duc tan thanh vai ((cua triet) OR (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky nang x hoi. hieu ((ve cac) OR (vien cac)) duc tan thanh vai ((cua triet) OR (su triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky nang x hoi. hieu ((ve cac) or (vien cac)) duc tan thanh vai ((cua triet) OR (su triet))*".