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