Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc ngu cu snippets" » "hoc nga cu snippets", "hoc nguoi cu snippets", "hoc nghe cu snippets", "hoc ngu ca snippets", "hoc ngu c snippets", "hoc ngu tu 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: (((("hoc ngu 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: (((("hoc ngu cu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc ngu cu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc ngu cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.