Perhaps you should try some spelling variations:
dat khanh » van khanh, duy khanh
cua viet » ca viet, hoa viet, cua vat
khanh vi » hanh vi, khanh v, nhanh vi
tham xuc » tham nuoc, tham thuc, pham duc
sach ty » sach y, sach tu, sach thu
cua tre » cua te, cuu tre, cua triet
xuc dat » duc duat, duoc dat, quoc dat
tu sach » thu sach, su sach, te sach
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
va tham » van tham, va cham, va thanh

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 ty ((nang xa) or (lang xa)) hoi. hieu va tham xuc dat khanh vi ((cua tre) or (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty ((nang xa) OR (lang xa)) hoi. hieu va tham xuc dat khanh vi ((cua tre) OR (cua viet)).
• Adding a wildcard symbol may retrieve word variants: tu sach ty ((nang xa) or (lang xa)) hoi. hieu va tham xuc dat khanh vi ((cua tre) or (cua viet))*.