Perhaps you should try some spelling variations:
ban hanh » ban hang
cuu tre » cua tre, cau tren, cau treo
vai cuu » vai cua
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cac xuc » cam xuc, cac nuoc, chat xuc
san ky » sang ky, van ky, ban ky
dan ky » van ky
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((san ky) OR (dan ky)) nang xa hoi. hieu ve cac xuc ((ban hanh) or (ngan hang)) vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((san ky) OR (dan ky)) nang xa hoi. hieu ve cac xuc ((ban hanh) OR (ngan hang)) vai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((san ky) OR (dan ky)) nang xa hoi. hieu ve cac xuc ((ban hanh) or (ngan hang)) vai cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu ((san ky) OR (dan ky)) nang xa hoi. hieu ve cac xuc ((ban hanh) or (ngan hang)) vai cuu tre*.