Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doc van cu snippets" » "do van cu snippets", "hoc van cu snippets", "duc van cu snippets", "doc van cau snippets", "doc van chu snippets", "doc van cua 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 van cu 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 van cu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doc van cu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doc van cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.