Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"len nhung ho snippets" » "nen nhung ho snippets", "bien nhung ho snippets", "hien nhung ho snippets", "len nhung hoc snippets", "len nhung kho snippets", "len nhung nho 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: (((("len nhung ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("len nhung ho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( len nhung ho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("len nhung ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.