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