Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"han tieu so snippets" » "hang tieu so snippets", "nhan tieu so snippets", "han dieu so snippets", "han thieu so snippets", "han tieu su snippets", "han hieu so 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: (((("han tieu 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: (((("han tieu so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( han tieu so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("han tieu so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.