Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"vua moi can snippets" » "va moi can snippets", "cua moi can snippets", "dua moi can snippets", "vua voi can snippets", "vua loi can snippets", "vua moi ban snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("vua moi can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("vua moi can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( vua moi can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vua moi can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.