Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luong so c snippets" » "luong iso c snippets", "tuong so c snippets", "luong su c snippets", "luong so d snippets", "luong so o snippets", "luong so _ 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: (((("luong so c snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luong so c snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luong so c snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luong so c snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.