Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"gan len tre snippets" » "gan lien tre snippets", "can len tre snippets", "gian lan tre snippets", "gan ben tre snippets", "gan luyen tre snippets", "gan len troi 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: (((("gan len tre snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("gan len tre snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( gan len tre snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("gan len tre snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.