Perhaps you should try some spelling variations:
xa khanh » xa thanh, van khanh, dat khanh
khanh vi » hanh vi, khanh v, nhanh vi
cua viet » ca viet, hoa viet, cua vat
sach ky » sach y, sach ty, sach kem
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
sac ky » cac ky, sai ky
va cam » va cham, va cac, va cao
xuc xa » tuc xa, buc xa

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