Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duong le te snippets" » "duong ve te snippets", "vuong le te snippets", "dung le te snippets", "duong le tet snippets", "duong le ta snippets", "duong le le 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: (((("duong le te snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duong le te snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duong le te snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duong le te snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.