Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dau van choi snippets" » "dau van chi snippets", "dau van cho snippets", "dau san choi snippets", "dao van choi snippets", "dam van choi snippets", "dau va choi 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: (((("dau van choi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dau van choi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dau van choi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dau van choi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.