Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lieu tham da snippets" » "lieu tai da snippets", "lieu phap da snippets", "lieu tham dam snippets", "lieu kham da snippets", "lieu tham do 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 tham da 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 tham da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lieu tham da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lieu tham da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.