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