Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"voi ban chan snippets" » "voi dan chan snippets", "voi ban than snippets", "voi ban nhan snippets", "doi ban chan snippets", "voi can chan snippets", "moi ban chan 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: (((("voi ban chan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("voi ban chan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( voi ban chan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("voi ban chan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.