Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"kho tich so snippets" » "ho tich so snippets", "kho tinh so snippets", "khoa tinh so snippets", "kho tich bao snippets", "kho tinh son 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: (((("kho tich so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("kho tich so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kho tich so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kho tich so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.