Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao thi lee snippets" » "do thi lee snippets", "dan thi lee snippets", "dang thi lee snippets", "dao thi le snippets", "dao thi lien snippets", "dao thi lieu 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: (((("dao thi lee snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dao thi lee snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao thi lee snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao thi lee snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.