Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
xa khanh » xa thanh, van khanh, dat khanh
khanh vi » hanh vi, khanh v, nhanh vi
sach ky » sach y, sach ty, sach kem
nang xa » nang x, lang xa, nang ma
cao duc » dao duc, cao suc, giao duc
sac ky » cac ky, sai ky
vi cua » vai cua, di cua

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 (sac ky)) nang xa hoi. hieu qua ((cam xuc) or (cao duc)) xa khanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sac ky)) nang xa hoi. hieu qua ((cam xuc) OR (cao duc)) xa khanh vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) OR (sac ky)) nang xa hoi. hieu qua ((cam xuc) or (cao duc)) xa khanh vi cua triet".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) OR (sac ky)) nang xa hoi. hieu qua ((cam xuc) or (cao duc)) xa khanh vi cua triet*.