Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dua va moi snippets" » "dua vao moi snippets", "vua va moi snippets", "sua va moi snippets", "dua va mot snippets", "dua ve moi snippets", "dua va mo 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: (((("dua va moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dua va moi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dua va moi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dua va moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.