Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lieu le chan snippets" » "lieu ly chan snippets", "hieu le chan snippets", "lieu de chan snippets", "lieu le thanh snippets", "lieu le khanh snippets", "lieu le thang 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: (((("lieu le chan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lieu le chan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lieu le chan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lieu le chan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.