Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phuc le du snippets" » "phuc se du snippets", "phuc liem du snippets", "phuc lai du snippets", "phuc le duc snippets", "phuc le duy snippets", "phuc ly 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: (((("phuc le 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: (((("phuc le du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phuc le du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phuc le du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.