Perhaps you should try some spelling variations:
cua triet » su triet, va triet
cua viet » ca viet, hoa viet, cua vat
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
danh va » doanh va, anh va, dan va
hanh va » hang va, hanh vi
x hoi » xa hoi, o hoi, x ho
ve am » va am
thuc » thu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky nang x hoi. hieu ve am thuc hanh ((danh va) OR (hanh va)) ((cua triet) or (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang x hoi. hieu ve am thuc hanh ((danh va) OR (hanh va)) ((cua triet) OR (cua viet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang x hoi. hieu ve am thuc hanh ((danh va) OR (hanh va)) ((cua triet) or (cua viet))*".