Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hong hai so snippets" » "hoang hai so snippets", "hong thai so snippets", "hong ha so snippets", "hong dai so snippets", "hong tai so snippets", "hong thai son 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: (((("hong hai so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hong hai so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hong hai so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hong hai so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.