Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van soc son snippets" » "van hoc son snippets", "van son son snippets", "van loc son snippets", "van ngoc son snippets", "van hoc song snippets", "van quoc 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: (((("van soc 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: (((("van soc son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van soc son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van soc son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.