Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duong le he snippets" » "duong ve he snippets", "vuong le he snippets", "dung le he snippets", "duong ke he snippets", "duong ly he snippets", "duong le ha 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 he 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 he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duong le he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duong le he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.