Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luc dich du snippets" » "muc dich du snippets", "luoc dinh du snippets", "hut dich du snippets", "luc dich vu snippets", "luc tich du snippets", "luc dinh du 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: (((("luc dich du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luc dich du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luc dich du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luc dich du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.