Perhaps you should try some spelling variations:
khanh vi » hanh vi, khanh v, nhanh vi
thu sach » thuat sach, thuoc sach, thu hoach
tu sach » su sach, te sach, tu cach
cua tre » cua te, cuu tre, cua triet
nang xa » nang x, lang xa, nang ma
qua co » qua con, cua co, qua ca
xuc xa » tuc xa
buc xa » tuc xa
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) or (thu sach)) ky nang xa hoi. hieu qua co ((xuc xa) or (buc xa)) khanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ky nang xa hoi. hieu qua co ((xuc xa) OR (buc xa)) khanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) ky nang xa hoi. hieu qua co ((xuc xa) or (buc xa)) khanh vi cua tre*.