Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"den so cong snippets" » "den bo cong snippets", "den cao cong snippets", "den hoc cong snippets", "den soc cong snippets", "den son cong snippets", "den o cong 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: (((("den so cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("den so cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( den so cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("den so cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.