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