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