Perhaps you should try some spelling variations:
cham cuu » cap cuu, chat cua
ban hanh » ban hang
nang xa » nang x, lang xa, nang ma
hieu va » lieu va
cuu ban » cuu van, cua ban, cuu san
cua tre » cua te, cuu tre, cua triet
tu sac » tu sach, tu cac, tu san
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 sac ky nang xa hoi. ((hieu va) OR (hieu qua)) cham cuu ban hanh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang xa hoi. ((hieu va) OR (hieu qua)) cham cuu ban hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang xa hoi. ((hieu va) OR (hieu qua)) cham cuu ban hanh vi cua tre*.