Perhaps you should try some spelling variations:
ban banh » ban hanh, ban anh, ban danh
nang mai » nang ma, nang tai, lang mai
banh vi » hanh vi, ban vi, benh vi
xuc ban » duc ban, cuc ban, quoc ban
hieu va » hieu qua
cua tre » cua te, cuu tre, cua triet
sach ky » sach y, sach ty, sach kem
mai hoi » mai khoi, dai hoi, lai hoi
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 ((sach ky) OR (sac ky)) nang mai hoi. ((lieu va) or (hieu va)) cam xuc ban banh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sac ky)) nang mai hoi. ((lieu va) OR (hieu va)) cam xuc ban banh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) OR (sac ky)) nang mai hoi. ((lieu va) or (hieu va)) cam xuc ban banh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) OR (sac ky)) nang mai hoi. ((lieu va) or (hieu va)) cam xuc ban banh vi cua tre*.