Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi lieu de snippets" » "tai lieu de snippets", "thi lien de snippets", "thi dieu de snippets", "thi lieu den snippets", "thi lieu da snippets", "thi lieu ve 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: (((("thi lieu de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thi lieu de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi lieu de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi lieu de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.