Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"va phan nom snippets" » "va han nom snippets", "va phan gom snippets", "va phan tom snippets", "van phan nom snippets", "va phat nom snippets", "va phap nom 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: (((("va phan nom snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("va phan nom snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( va phan nom snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("va phan nom snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.