Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doc can nghe snippets" » "doc van nghe snippets", "doc cap nghe snippets", "doc cac nghe snippets", "hoc can nghe snippets", "doc cao nghe snippets", "doc chat nghe 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: (((("doc can nghe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doc can nghe snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doc can nghe snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doc can nghe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.