Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"kho tre he snippets" » "khoe tre he snippets", "khoa tre he snippets", "cho tre he snippets", "kho te he snippets", "kho tren het 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: (((("kho tre he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("kho tre he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kho tre he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kho tre he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.