Perhaps you should try some spelling variations:
cua triet » su triet, va triet
cua viet » ca viet, hoa viet, cua vat
nang ma » tang ma, sang ma, nang cao
hieu de » hieu ve, hieu he, hieu le
va hanh » van hanh, va thanh, va danh
hanh di » hanh vi, hanh de, hang di
vu sac » vu sach, va sac, vu cac
vu san » va san, vu ban
de dat » de dao
nuoc » quoc, duoc, ngoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu sac) or (vu san)) ky nang ma hoa. hieu de dat nuoc va hanh di ((cua triet) OR (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sac) OR (vu san)) ky nang ma hoa. hieu de dat nuoc va hanh di ((cua triet) OR (cua viet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sac) or (vu san)) ky nang ma hoa. hieu de dat nuoc va hanh di ((cua triet) OR (cua viet))*".