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