Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hen mo hoc snippets" » "yen mo hoc snippets", "hen ho hoc snippets", "khien mo hoc snippets", "hen mon hoc snippets", "hen co hoc 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: (((("hen mo hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hen mo hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hen mo hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hen mo hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.