Perhaps you should try some spelling variations:
"dung le hoai snippets" » "dung le code snippets", "dung len hoai snippets", "dung he hoai snippets", "dung de hoai snippets", "dung le hoi snippets", "dung le hai snippets", "dung le hoang snippets"
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data 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: (((("python using java snippets") or ("dung le hoai snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("dung le hoai snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( dung le hoai snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("dung le hoai snippets"))) or ("locating bug core snippets"))*.