Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhung thu le snippets" » "hung thu le snippets", "nhung phu le snippets", "nhung chu le snippets", "nhung thu les snippets", "nhung thu xe snippets", "nhung tu 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: (((("nhung thu 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: (((("nhung thu le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhung thu le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhung thu le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.