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