Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"both dan cho snippets" » "binh dan cho snippets", "bach dan cho snippets", "bot da cho snippets", "both danh cho snippets", "both san cho snippets", "both dac cho 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: (((("both dan cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("both dan cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( both dan cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("both dan cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.