Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
va triet » va thiet, va trien, ve triet
hieu ve » hieu va, hieu van
cac hoc » cach hoc, cac hop, bac hoc
danh di » danh du, danh dien, danh gia
xanh di » vanh dai, xanh tai
te cac » tu cac, te cao, de cac
ve cac » va cac, vien cac
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: te cac ky nang x hoi. hieu ve cac hoc va ((danh di) or (xanh di)) ((cua viet) or (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te cac ky nang x hoi. hieu ve cac hoc va ((danh di) OR (xanh di)) ((cua viet) OR (va triet)).
• Adding a wildcard symbol may retrieve word variants: te cac ky nang x hoi. hieu ve cac hoc va ((danh di) or (xanh di)) ((cua viet) or (va triet))*.