Perhaps you should try some spelling variations:
tuan xuc » quang xuc, tuan khuc, toan xac
cua tre » cua te, cuu tre, cua triet
va hanh » van hanh, va thanh, va danh
nang xa » lang xa, nang ma, mang xa
va tuan » van tuan, va quan, va toan
hieu va » lieu va, hieu qua
vi cua » vai cua, di cua
xuc va » duc va, tuc va, luc va
sac ky » cac ky

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sac ky) or (sai ky)) ((nang xa) or (nang x)) hoi. hieu va tuan xuc va hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sac ky) OR (sai ky)) ((nang xa) OR (nang x)) hoi. hieu va tuan xuc va hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sac ky) or (sai ky)) ((nang xa) or (nang x)) hoi. hieu va tuan xuc va hanh vi cua tre*.