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