Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"che ho moi snippets" » "che do moi snippets", "he ho moi snippets", "che khoa moi snippets", "che hoc moi snippets", "che cho moi snippets", "che hoa 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: (((("che ho 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: (((("che ho moi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( che ho moi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("che ho moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.