Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoi trong he snippets" » "choi trong he snippets", "doi trong he snippets", "nuoi trong he snippets", "hoi trong che snippets", "hoi trong hue snippets", "hoi trong le 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: (((("hoi trong he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoi trong he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoi trong he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoi trong he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.