Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu van he snippets" » "thuc van he snippets", "thuy van he snippets", "tu van he snippets", "thu van hoe snippets", "thu van hue snippets", "thu van de 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: (((("thu van he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thu van he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu van he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu van he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.