Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhung can ve snippets" » "nhung cang ve snippets", "nhung cau ve snippets", "nhung van ve snippets", "nhung ban ve snippets", "nhung dan ve snippets", "nhung can va 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 can ve 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 can ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhung can ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhung can ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.