Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc san choi snippets" » "hoc san chi snippets", "hoc san cho snippets", "hoc van choi snippets", "hoc dan choi snippets", "toc san choi snippets", "hoc can choi 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 san choi 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 san choi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc san choi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc san choi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.