Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lieu so mot snippets" » "hieu so mot snippets", "thieu so mot snippets", "lieu hoc mot snippets", "lieu sao mot snippets", "lieu son mot snippets", "lieu o mot 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: (((("lieu so mot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lieu so mot snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lieu so mot snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lieu so mot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.