Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mat dan hong snippets" » "mat dan phong snippets", "mat dan dong snippets", "mat dai hong snippets", "hat dan hong snippets", "luat dan hong snippets", "mat bang hong 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: (((("mat dan hong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mat dan hong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mat dan hong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mat dan hong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.