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