Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pham may son snippets" » "pham xay son snippets", "pham ma son snippets", "phan may son snippets", "pham may san snippets", "pham tay son snippets", "pham may cong 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: (((("pham may son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("pham may son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham may son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham may son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.