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