Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dich va cong snippets" » "dich vu cong snippets", "tich va cong snippets", "dinh van cong snippets", "dich tai cong snippets", "dich cua 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: (((("dich va 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: (((("dich va cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dich va cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dich va cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.