Perhaps you should try some spelling variations:
cau theo » cau thi, cau tao
va hanh » van hanh, va thanh, va danh
hanh va » hang va, hanh vi
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
van du » van duy, van dau, van de
van tu » van thu, ban tu, van tuan
va cau » van cau, va cac, va dau
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 qua ((van du) or (van tu)) va hanh va cau theo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky nang x hoi. hieu qua ((van du) OR (van tu)) va hanh va cau theo*.