Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
xanh hanh » danh thanh, ban hanh, van hanh
hanh vai » hanh vi, hanh va, hanh tai
cam duc » cam xuc, pham duc, nam duoc
vai cua » dai cua, hai cua, lai cua
cao duc » dao duc, cao suc, giao duc
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
sach tu » sach thu, cach tu, sach ty

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) or (sach tu)) nang xa hoi. hieu ve ((cam duc) OR (cao duc)) xanh hanh vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sach tu)) nang xa hoi. hieu ve ((cam duc) OR (cao duc)) xanh hanh vai cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) or (sach tu)) nang xa hoi. hieu ve ((cam duc) OR (cao duc)) xanh hanh vai cua triet*".