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