Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pham ca voi snippets" » "pham can voi snippets", "pham ma voi snippets", "pham va voi snippets", "pham cap voi snippets", "pham ba voi snippets", "pham da voi 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 ca voi 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 ca voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham ca voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham ca voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.