Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoe tre ho snippets" » "khoe te ho snippets", "khoe tre so snippets", "khoa tre ho snippets", "khoi tre ho snippets", "kho tre ho 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: (((("khoe tre 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: (((("khoe tre ho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoe tre ho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoe tre ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.