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