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