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