Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lenh xu cong snippets" » "lenh tu cong snippets", "lenh vu cong snippets", "lenh xu dong snippets", "linh xu cong snippets", "benh xu cong snippets", "len xu cong 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: (((("lenh xu cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lenh xu cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lenh xu cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lenh xu cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.