Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"huu phong so snippets" » "huy phong so snippets", "cuu phong so snippets", "huu thong so snippets", "huu phong mo snippets", "huu phong cho snippets", "huu cong so 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 phong so 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 phong so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( huu phong so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("huu phong so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.