Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc phan coi snippets" » "hoc dan coi snippets", "hoc pho coi snippets", "hoc phan co snippets", "hoc phan hoi snippets", "hoc phan moi 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 phan coi 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 phan coi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc phan coi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc phan coi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.